Galaxy S3 Android 4.3 no signal - Galaxy S III Q&A, Help & Troubleshooting

Yesterday I updated my i9300 to android 4.3
Baseband version I9300BUUGMJ3
Build number JSS15J.I9300XXUGMJ9
..and since then I haven't had any reception. My imei number, serial number, and everything else is same and still there, but I just can't get it to get reception again... When I go to my Mobile Networks, it says registered on network, but again, no reception. Then I tried installing the modem BUUGMJ3 with odin which didn't work. What can help? Stock firmware? Please help.
Thanks in advance.

currently experiencing the same issue mate. I can't seem to find a workaround/solution for this -__-

Is that base band supposed to work in your country? Find an modem later than EMGx, without a RIL, for your country and install that to test.

boomboomer said:
Is that base band supposed to work in your country? Find an modem later than EMGx, without a RIL, for your country and install that to test.
Click to expand...
Click to collapse
I've probably made a big mistake there, no it's meant for mine country, it's for the county near mine, Croatia, but I read somewhere that this doesn't matter.. :/
And by 'later than EMGx' I'm not sure what you mean, but I've flashed EMG4 modem which didn't seem to work.
Found something about flashing a previous modem and restoring your EFS folder, but I do not have my EFS folder backed up - I forgot to.
A few days ago I paid about $30 for a repair on my phone, I don't really want to send it off for repairs again, I really wonder if there is an fix to this

Follow the guides in general forum, stickies on how to flash back to 4.1.2 stock rom. Make sure it's at least EMG4 base band.

boomboomer said:
Follow the guides in general forum, stickies on how to flash back to 4.1.2 stock rom. Make sure it's at least EMG4 base band.
Click to expand...
Click to collapse
Yeah, about that...
first of all, sorry for bugging you so much..
but I downloaded the right stock firmware for my country, I9300XXEMG4_I9300BHTEMH1_I9300XXEMG4, but after I flash it via odin when the phone turns on it gets stuck in a loop showing the Samsung logo repeatedly...
Edit:
Okay, I managed to install the stock firmware 4.1.2 but it still is showing 'Emergency calls only', the modem is xxemg4...

Delko said:
Yeah, about that...
first of all, sorry for bugging you so much..
but I downloaded the right stock firmware for my country, I9300XXEMG4_I9300BHTEMH1_I9300XXEMG4, but after I flash it via odin when the phone turns on it gets stuck in a loop showing the Samsung logo repeatedly...
Edit:
Okay, I managed to install the stock firmware 4.1.2 but it still is showing 'Emergency calls only', the modem is xxemg4...
Click to expand...
Click to collapse
how about your IMEI/Serial numbers? are they still the same before you downgrade and flashed the XEMG4 modem? mine are the same with SN/IMEI so I guess that's why it worked. I just took the risk cause I was really pissed experiencing the lag and the battery drain in 4.3.

Do factory reset from settings option in touch wiz, make sure the imei and serial number match the label under your battery.
If still no good then try another SIM in your phone, final steps would be restore efs backup then repair centre.

thehavoc said:
how about your IMEI/Serial numbers? are they still the same before you downgrade and flashed the XEMG4 modem? mine are the same with SN/IMEI so I guess that's why it worked. I just took the risk cause I was really pissed experiencing the lag and the battery drain in 4.3.
Click to expand...
Click to collapse
Well it's all the same as it used to be. Could it be that the modem I had before EMG4 changed the format of my efs folder?
boomboomer said:
Do factory reset from settings option in touch wiz, make sure the imei and serial number match the label under your battery.
If still no good then try another SIM in your phone, final steps would be restore efs backup then repair centre.
Click to expand...
Click to collapse
Did a factory reset, imei, s/n same.
Android 4.1.2 EMG4 modem still no reception.

It seems that MGX modem has change ur IMEI from /efs1 to /efs2. MGX modem seems to support only 4.3 roms (due to some security issue).
It is not recommended,but u could flash an older rom with modem (get from www.sammobile.com) then restore an efs backup (if u did some) from /efs2 to /efs1
Sent from my GT-I9300 using xda app-developers app

Samsung Galaxy S3 i9300 "not Registered on Network" after 4.3 I9300XXUGMJ9 Update
I recently installed 4.3-official-I9300XXUGMJ9 on my Samsung Galaxy S3 (i9300) and everything went fine. I was upgrading from 4.1.2 but now I am facing “Not Registered on network” Issue. I tried Arzia Patch, tried falshing Modems (I9300XXLG8 and BUUGMJ3 ) nothing Works.
FYI: My serial Kay or IMEI is not 0000 they are fine.
Here’s the list from Setting->About Device->Status<br>
Network: unknown<br>
Service State: Out of service<br>
Mobile Network State: disconnected<br>
Device Status: Official
Also My Sim works fine in other Phones. Any help will be greatly appriciated.

dmarkweb said:
I recently installed 4.3-official-I9300XXUGMJ9 on my Samsung Galaxy S3 (i9300) and everything went fine. I was upgrading from 4.1.2 but now I am facing “Not Registered on network” Issue. I tried Arzia Patch, tried falshing Modems (I9300XXLG8 and BUUGMJ3 ) nothing Works.
FYI: My serial Kay or IMEI is not 0000 they are fine.
Here’s the list from Setting->About Device->Status<br>
Network: unknown<br>
Service State: Out of service<br>
Mobile Network State: disconnected<br>
Device Status: Official
Also My Sim works fine in other Phones. Any help will be greatly appriciated.
Click to expand...
Click to collapse
Ariza patch only works on older modems (efs v1 modems). So, that wont help.
You said you flashed the zuluman modems but.... did you flash the patched kernels too? You need the patched kernels for the patched modems to work. I don't know why, but that's what zuluman says (according to him, the kernel has a modem signature check and it wont work if the modem was modified).

Gonzakpo said:
Ariza patch only works on older modems (efs v1 modems). So, that wont help.
You said you flashed the zuluman modems but.... did you flash the patched kernels too? You need the patched kernels for the patched modems to work. I don't know why, but that's what zuluman says (according to him, the kernel has a modem signature check and it wont work if the modem was modified).
Click to expand...
Click to collapse
Sorry didn't tried flashing kernal. since I didn't find that file, because wasn't available for download. can you help me find a combination of Modem+kernal??
Thanks

dmarkweb said:
Sorry didn't tried flashing kernal. since I didn't find that file, because wasn't available for download. can you help me find a combination of Modem+kernal??
Thanks
Click to expand...
Click to collapse
Here are all the patched modems and kernels made by zuluman.
https://drive.google.com/folderview...&usp=sharing&tid=0B6MIUd7HJudAbU5YaGkzOUowMG8
In my opinion you should flash the latest official firmware and download the appropiate modem and kernel from that google drive.
You can download the latest official firmware from the general section of this forum.
Good luck.
Remember to always have an efs backup!

Great thanks!
Gonzakpo said:
Here are all the patched modems and kernels made by zuluman.
https://drive.google.com/folderview...&usp=sharing&tid=0B6MIUd7HJudAbU5YaGkzOUowMG8
In my opinion you should flash the latest official firmware and download the appropiate modem and kernel from that google drive.
You can download the latest official firmware from the general section of this forum.
Good luck.
Remember to always have an efs backup!
Click to expand...
Click to collapse
Flashing the Modem + Kernal after rooting the Phone works for me. I have flashed it using CWM.
Thanks once again.

the same problem with signal
hello,
i've the same problems with my s3. i flashed it OTA to Android 4.3
After this i had no signal. ...
When i found this thread i was so happy. BUT!!!
i downloaded all the modem and kernel files from the google drive and wanted to flash them (Patched_XXUGMK6_xxx.zip) with cwm recovery (latest version).
whenever i want to do this, i get the following message and the update aborts: "E:Can't copy META-INF/com/google/android/update-binary"
what can i do? Can i flash them with odin, too? Or does anybody have another idea?
here are some Infos about my Phone:
Android-Version: 4.3
Baseband: I9300XXUGMK6
Kernel: 3.0.31-2191747
[email protected] #1
Tue Nov 26 16:57:12 KST 2013
Build: JSS15J.I9300XXUGMK6

hmm...
can nobody help me? ...
sorry for spamming, but i've got a problem without a phone
greetz,
Carpe.

You said your imei & serial is ok but you cannot register to network. Have you paid your bills?
But if it's corrupted serial number.
Try this guide.

thx for your answer.
Payed my bills? ... uuuuuups!
back to topic: i've flashed my phone back to 4.1.2 for the moment. Network seems to work. ... i'll try some things and give a feedback here. ...

You have to flash an Android 4.3 modem for it to work I think but as your on 4.1.2 now I guess it doesn't matter anymore
Sent from my GT-I9300 using Tapatalk

Related

[Q] GT-i9300 imei null/null, unknown baseband

I have an i9300 with a blank efs folder. The phone corrupted and was stuck in a boot loop. This happened when battery run out while file sharing was in progress via bluetooth to another android samsung. I flashed it with 4.22 android jelly bean immediately XXUFME3 but it remained stuck on boot loop, I never backedup efs file. Later found the original ROM although it comes up as custom rom, which is i9300XXEMB5_i9300OXAEMB5 but still no luck as it stuck in boot loop. My sister has the same identical phone both were purchased together in Dubai. I did factory reset etc, no luck still in boot loop.
I later gave it to a mobile shop who flashed it with a rom for free, didn't charge me because it came up as imei null/null and baseband unknown. The phone now boots and has Build number of IMM76D.I9300BUALE6 and is german language I believe. I had read some threads by now and I immediately rooted the phone and backed it up, but my efs folder is blank.
Last night I flashed the phone 2 times with i9300xxemb5 rom and rooted it and it still boot looped even factory reset or cache delete don't solve boot loop, Then I restored the working rom of build i9300BUALE6 from CWM and powered phone on and got a baseband of i9300XXEMB5 and Build of i9300BUALE6 also got an imei of 004999xxxxx0000/01 and the phone found the network and my efs folder which had been blank all this time was full of files. In my haste I realized the sim was not plugged in and removed battery, when I restarted with sim, baseband was gone and imei was null/null. I repeated my steps in hopes I could get this fluke opportunity but nothing yet. Was this a miracles I didn't seize by not backing up the efs folder?
My sister's phone is an identical model bought together with mine is,
AP:i9300xxemb5
CP:i9300xxemb5
CSC:i9300oxaemb5
So my question is I need the original stock rom for my sisters phone that won't get stuck in a boot loop on my phone
My phone is now
AP:i9300buale6
CP:unknown
CSC:i9300vfgale6
Also can this be fixed by backing up my sister's efs folder or backing up her phone and flashing it on my phone. I can't get warranty for this phone now since it has binary counter of 12, don't have proof of purchase and also I am not in Dubai but in Africa. What Rom file should I try to flash. Also because this is a custom rom I am not getting samsung serial port in device manager can't use NV writer. Any help is appreciated.
If you don't have an efs backup then you need a service centre, you cannot repair it. Trying to use another phone's efs folder won't work and is illegal in many countries.
Read the sticky on efs:
http://forum.xda-developers.com/showthread.php?t=2393289
If its a custom rom their is a very small chance that it included backup pf EFS .
Look for EFS tar file on phone .
I say slim chance and judged by the OP probably no chance .
004999xxxxx0000/0 that's just the generic non working IMEI .
jje
JJEgan said:
If its a custom rom their is a very small chance that it included backup pf EFS .
Look for EFS tar file on phone .
I say slim chance and judged by the OP probably no chance .
004999xxxxx0000/0 that's just the generic non working IMEI .
jje
Click to expand...
Click to collapse
Sorry to hijack this thread but I dropped my S3 i9300 on water and have the imei null /null and baseband unknown problem, therefore SIM cards are not recognized. Do you think my problem can be solved by doing something without taking it to samsung service? Meanwhile I ordered a SIM /SD tray replacement but my bet is it won't solve the problem.
Thank you.
No.
Sent from my GT-I9300 using Tapatalk 4
rootSU said:
No.
Sent from my GT-I9300 using Tapatalk 4
Click to expand...
Click to collapse
Thanks again for your input but I was hoping to get a second opinion
Cheers
I see...
@JJEgan - you've been chosen
Sent from my GT-I9300 using Tapatalk 4
hi from what you explained it seems that right now your phone has no baseband. One thing you can do to possibly recover your imei and network settings is to flash a stock rom that uses mg4 or mg2 baseband. use a rom from sammobile and flash with odin make sure you use a rom with an mg2 or mg4 baseband. good luck
ashraf sharif said:
hi from what you explained it seems that right now your phone has no baseband. One thing you can do to possibly recover your imei and network settings is to flash a stock rom that uses mg4 or mg2 baseband. use a rom from sammobile and flash with odin make sure you use a rom with an mg2 or mg4 baseband. good luck
Click to expand...
Click to collapse
Thanks a lot for the reply.
A user from another thread suggested to install the Perseus Kernel first. Do you think that would help?
Cheers
Badelhas said:
Thanks a lot for the reply.
A user from another thread suggested to install the Perseus Kernel first. Do you think that would help?
Cheers
Click to expand...
Click to collapse
A custom kernel has no connection with the lost of IMEI or it's a solution for the recovery of an IMEI. So no, no custom kernels will help you with your problem.
Either try ashraf's suggestion or ultimately bring it to a Samsung service center for repair.
SignetSphere said:
A custom kernel has no connection with the lost of IMEI or it's a solution for the recovery of an IMEI. So no, no custom kernels will help you with your problem.
Click to expand...
Click to collapse
Thanks for the input, M8. So you think I could try to flash a stock rom that uses mg4 or mg2 baseband?
Badelhas said:
Thanks for the input, M8. So you think I could try to flash a stock rom that uses mg4 or mg2 baseband?
Click to expand...
Click to collapse
You can try but i doubt that it'll restore your IMEI. If that doesn't work then you have no choice other than to bring it to Samsung for repair.
Badelhas said:
Thanks a lot for the reply.
A user from another thread suggested to install the Perseus Kernel first. Do you think that would help?
Cheers
Click to expand...
Click to collapse
I don't know about perseus kernel but I don't think it will help. your imei and efs foder was intact before flashing4.2.2. I understand that the problem began before flashing 4,2,2. but if you ever had a rom that used an mg4 or mg2 modem and then used an older modem your phone would lose its network connection and would probably display a generic imei number. if it says null usually that means it is corrupted or no modem is installed . either way if you send to service center you need to flash a stock rom and reset your flash counter . since some people have recovered their efs and imei by flashing newer modems or firm wares that use them why not try it before sending phone to service center
ashraf sharif said:
I don't know about perseus kernel but I don't think it will help. your imei and efs foder was intact before flashing4.2.2. I understand that the problem began before flashing 4,2,2. but if you ever had a rom that used an mg4 or mg2 modem and then used an older modem your phone would lose its network connection and would probably display a generic imei number. if it says null usually that means it is corrupted or no modem is installed . either way if you send to service center you need to flash a stock rom and reset your flash counter . since some people have recovered their efs and imei by flashing newer modems or firm wares that use them why not try it before sending phone to service center
Click to expand...
Click to collapse
Thanks but you didn't read my first post. I did not flash any rom (or even root) before the problem, which started from dropping the phone on water...so I have no warranty left This means I can take the phone anyway I want (custom kernel, rooted) to samsung service cause they will charge me anywat.
But I think I will try to flash a rom like the other user sayd because I flashed the Perseus Kernel and the phone is now unstable and reboots randonly...
Cheers
my mistake that post was for the op of this thread
I don't care anymore that my original answer was
deemed not acceptable enough and warranted a second opinion. I am once and for all, going to put this nonsense to bed.
If you lost your imei because you submerged your phone in water it is a hardware issue. It is INCONCEIVABLE that flashing a rom, kernel or baseband will restore the imei. A SOFTWARE solution will NOT repair DAMAGED HARDWARE. This is obvious!
If your Blu ray player cannot read disks because the disk tray fell off, upgrading the laser driver wont help. This is exactly the same.
Depending which hardware failed, replacing the tray may help although given the symptoms, it seems much more likely that your radio stack is damaged. Take it somewhere to get it repaired and stop wasting time pretending software will fix your issue. It's IMPOSSIBLE
Sent from my GT-I9300 using Tapatalk 4
And so say all of us .
Hi, SignetSphere
Sorry for hijcking but your sign here says
Device: Samsung Galaxy SIII GT-I9300
ROM: Stock (XXEMH1 Odexed 4.1.2 Jellybean)
Kernel: Boeffla 3.0
Baseband: I9300CEEMG2
Recovery: PhilZ Touch 5.11.2
Mods: Jkay Deluxe 14.95 & ViPER4Android Audio Effects
Theme: Dream Themes 1.9 by orangerot
by highlighting i want to emphasise these points (do let me know have i understood correctly)
1) i'm on stock XXEMG5 and yours is MH1 which means yours is ahead of mine and how's it better or it's just region specific???
2)you are on MG2 baseband/modem does that means you also have to be restricted to MG2 baseband/modem only when flashing roms????
thanks in advance.....
gauravinvouge said:
Hi, SignetSphere
Sorry for hijcking but your sign here says
Device: Samsung Galaxy SIII GT-I9300
ROM: Stock (XXEMH1 Odexed 4.1.2 Jellybean)
Kernel: Boeffla 3.0
Baseband: I9300CEEMG2
Recovery: PhilZ Touch 5.11.2
Mods: Jkay Deluxe 14.95 & ViPER4Android Audio Effects
Theme: Dream Themes 1.9 by orangerot
by highlighting i want to emphasise these points (do let me know have i understood correctly)
1) i'm on stock XXEMG5 and yours is MH1 which means yours is ahead of mine and how's it better or it's just region specific???
2)you are on MG2 baseband/modem does that means you also have to be restricted to MG2 baseband/modem only when flashing roms????
thanks in advance.....
Click to expand...
Click to collapse
I see you're still struggling to understand this.
2) If the ROM is MG (M = 2013, G = July) or Newer, the ROM changes EFS format. This means if you flash one of these ROMs without backing up your EFS, you are restricted to using an MG modem or newer as only Modems from July 2013 can read new EFS format. I'm really not sure how I can make this any simpler to understand.
However, if you flash the modem separately from the ROM, EFS is not changed. So for example, if you are on ME7 ROM, you can flash MG2 modem without affecting EFS.
I hope this is clear now.
rootSU said:
I see you're still struggling to understand this.
2) If the ROM is MG (M = 2013, G = July) or Newer, the ROM changes EFS format. This means if you flash one of these ROMs without backing up your EFS, you are restricted to using an MG modem or newer as only Modems from July 2013 can read new EFS format. I'm really not sure how I can make this any simpler to understand.
However, if you flash the modem separately from the ROM, EFS is not changed. So for example, if you are on ME7 ROM, you can flash MG2 modem without affecting EFS.
I hope this is clear now.
Click to expand...
Click to collapse
Dear rootSU,
you've been very patient with me and i really appreciate your efforts at making me understand and i've understood a lot because of you only,but what puzzles me is that
1)this restriction is for those who've not backed up EFS whereas in my case i had in the very beginning only made an EFS backup.
2)and if i flash ME7 ROM then since am coming from MG5 to ME7 my imei would again be corrupt and i'll have to flash MG2 baseband...right??even if i have an EFS backup(EFS PRO won't restore my imei in this case despite a backup)?
thanks in advance

[SOLVED] Not Registered on network [IMEI changed but to another]

SOLUTION:
Flashed this patched modem:
Code:
http://forum.xda-developers.com/showpost.php?p=45038238&postcount=466
Now back to network
Also PLEASE BACKUP YOUR EFS!! BACK IT UP!! ASAP!!
I flashed a MG4 rom and after that the imei is changed. I do not have efs backup.
The IMEI has been changed to a new one and the mob is showing emergency calls and not registered on network.
The Serial Number has changed to 00000000000
I cannot make calls or text other than that the mob works ok.
The imei was 353xxxxxx and now it is 3591xxxxxx
Can anybody help?
Also the rom was sammy not a custom rom so i got no backup of EFS.
I tried using MG4 baseband but same error.
Ariza patch simply nulls the imei and hence not working for me.
converse5 said:
I flashed a MG4 rom and after that the imei is changed. I do not have efs backup.
The IMEI has been changed to a new one and the mob is showing emergency calls and not registered on network.
The Serial Number has changed to 00000000000
I cannot make calls or text other than that the mob works ok.
The imei was 353xxxxxx and now it is 3591xxxxxx
Can anybody help?
Also the rom was sammy not a custom rom so i got no backup of EFS.
I tried using MG4 baseband but same error.
Ariza patch simply nulls the imei and hence not working for me.
Click to expand...
Click to collapse
You have to read the posts by zuluman at the end of the arizan thread about patching modem
@rootSU
I have to install the patched modem right?
I istalled this patch and now back to network!!
Thanks alot for your help zuluman and rootSu
rootSU said:
You have to read the posts by zuluman at the end of the arizan thread about patching modem
Click to expand...
Click to collapse
Also just a quick question, Now what if i install another custom rom. Will I have to install the patched modem only or do i have to restore the present efs wihch is in working condition.?
converse5 said:
Also just a quick question, Now what if i install another custom rom. Will I have to install the patched modem only or do i have to restore the present efs wihch is in working condition.?
Click to expand...
Click to collapse
If your rom comes with a modem, you'll need to reflash the patched one. Otherwise, no action to take.
Thanks alot!
I am glad that my device is back in life
converse5 said:
I istalled this patch and now back to network!!
Thanks alot for your help zuluman and rootSu
Click to expand...
Click to collapse
Out of interest, was it simply from this post:
http://forum.xda-developers.com/showpost.php?p=45098088&postcount=476
You flashed?
Edit > I see you updated OP and flashed specific modem.
Yes i flashed the patched modem and the network is back online and up until now the phone seems pretty good and batteryl life is excellent.
Also I am on stock JB firmware for now.
I'm having the same problem. Did you flash modem by downloading and pasting into an sd card and then by using TWRP on your phone?
I've got the same issue, was running on stock 4.3 and flash a different stock rom on it , lost my imei and baseband now am stuck with no network , looked for solutions all round but non is working .. didn't back up my EFS too . Can anyone help with this ?
qwaiks said:
I've got the same issue, was running on stock 4.3 and flash a different stock rom on it , lost my imei and baseband now am stuck with no network , looked for solutions all round but non is working .. didn't back up my EFS too . Can anyone help with this ?
Click to expand...
Click to collapse
Depends what you mean by "different stock rom".
If you flashed backwards to 4.1.2 then your efs isn't damaged, it just can't be read because the encryption keys changed at 4.3. You cannot downgrade without an efs backup from 4.1.2. In that case you should be able to flash back to 4.3 and your efs will be ok.
You can also try kies emergency recovery. Depending on your os depends on which kies (2 or 3) to use.
Beamed in by telepathy.

Not Registered On Network

Before someone tells me, YES I know this is a common problem and YES I know there are lots of thread that talk about this particular subject.
But I think I'm having a different problem.
I had a I9300 unbranded that, for some reason, didn't wanted to update through Kies or OTA. But It could make calls and send txt msgs.
I decided to update it manually using ODIN to the latest official firmware for my phone (XEF - France). I downloaded it from Sammobile. Everything went perfect. Then I wiped everything to just to be safe.
Everything works great. Wifi, Apps, everything. Except making calls or sending txt msgs. It says "not registered on network".
My IMEI is still the same as before (the efs didn't get corrupted I guess).
Anyway, I have a backup from every partition. So I can get back to the previous state. But I want to fix this problem! Does anyone knows what's wrong?
I use to have this:
PDA: I9300XXBLH3
MODEM: I9300XXLH1
CSC: I9300XEFBLH2
Product Code: XEF
Country: France
And I flashed this:
PDA: I9300XXEMG4
MODEM: I9300XXEMG4
CSC: I9300XEFEMG2
Product Code: XEF
Country: France
Did I do something wrong?
You're not having a different problem at all.
You've installed an MG4 modem
Start reading the topics on mg4 modem flashing
RickEphraims said:
You're not having a different problem at all.
You've installed an MG4 modem
Start reading the topics on mg4 modem flashing
Click to expand...
Click to collapse
Would you mind telling me what's exactly the problem I'm having?
I have another i9300 with the same modem and that one works fine!
Your original modem was version one but when you installed the mg4 modem and it changes your EFS to version two.
All sorts of problems can happen now.
Try installing patched Mg4 modem which is found somewhere on here
RickEphraims said:
Your original modem was version one but when you installed the mg4 modem and it changes your EFS to version two.
All sorts of problems can happen now.
Try installing patched Mg4 modem which is found somewhere on here
Click to expand...
Click to collapse
Oh...f*ck!
I used the firmware that was supposed for my phone. Nothing else. Everything stock. I've downloaded it from Sammobile. I can't believe it!
My IME is OK. It's the same I used to have before (when it worked). Are you sure that my EFS is wrong now?
Can't I flash another firmware? I still have my EFS backup.
Which one should I've had flashed of these?
sammobile -> /firmwares/1/?model=GT-I9300&pcode=XEF#firmware
(Sorry I'm not allowed to post links yet)
If you backed up your EFS before the upgrade , you have two choices.
Go back to the original firmware and restore your EFS from backup or
Install patched mg4 modem found here on forums.
Sometimes the modem is not compatible with your region.
You can flash any of the newer modems available here as well.
You just can't install the older modems as your EFS has been changed to EFS version 2
RickEphraims said:
If you backed up your EFS before the upgrade , you have two choices.
Go back to the original firmware and restore your EFS from backup or
Install patched mg4 modem found here on forums.
Sometimes the modem is not compatible with your region.
You can flash any of the newer modems available here as well.
You just can't install the older modems as your EFS has been changed to EFS version 2
Click to expand...
Click to collapse
I've been reading this: http://forum.xda-developers.com/showthread.php?t=2377731
But I still don't undestand something. My IMEI is showing correctly. Shouldn't the phone work anyway regardless of the Modem version?
The problem on the modem version is that once is changed, you can't revert back unless you have an EFS backup. But that doesn't explain why my phone is not working. Am I right? I mean, it should work! I have another i9300 with the same modem and it works...
Are you sure this is my problem? I don't see the logic behind your sugestion.
Flashing a full stock rom, EMG4, including the modem shouldn't break anything. You say your phone had issues before you flashed, did it have any unlock or serial (ariza) patches applied?
If so then they won't work on efs v2 and you'll need to apply the patched modem, or flash an earlier rom (from before EMG4) then restore your efs backup.
Sent from my GT-I9300 using Tapatalk
boomboomer said:
Flashing a full stock rom, EMG4, including the modem shouldn't break anything. You say your phone had issues before you flashed, did it have any unlock or serial (ariza) patches applied?
If so then they won't work on efs v2 and you'll need to apply the patched modem, or flash an earlier rom (from before EMG4) then restore your efs backup.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
My phone was rooted and it didn't update though official methods (I don't know why!). I wanted to leave it to stock. That's why I flashed the stock rom. Thanks god I did my backup. But I want to keep this version, It is official and it's the latest one. It should work!
I've bought the phone on Amazon and it came already rooted to my surprise. I just wanted to return it to stock, Should I start worring?
I actually backed up everything except USER DATA partition. So I can still take a look at the system partition I used to have (I guess...).
My previous issues where related to my phone not wanting to update. But the network connectivity was ok.
If I flashed a new stock rom... can I still have remanents from the previous rom? I also wiped everything. Does that make any sense? (sorry I'm kind of new in all this).
PD: I'm getting scared!!! :crying:
Best go read the efs 'know this stuff' thread in general forum, stickies for more information and links to help.
Sent from my GT-I9300 using Tapatalk
Sounds like something got screwed during the update. Installing the patched mg4 modem should fix it
---------- Post added at 09:01 AM ---------- Previous post was at 09:00 AM ----------
Yes reading the stickies is the best way to get the answers you require. Each problem encountered is slightly different.
RickEphraims said:
Sounds like something got screwed during the update. Installing the patched mg4 modem should fix it
---------- Post added at 09:01 AM ---------- Previous post was at 09:00 AM ----------
Yes reading the stickies is the best way to get the answers you require. Each problem encountered is slightly different.
Click to expand...
Click to collapse
The stick says "Also it would seem, Phones that had this patch ON EFS v1 ROMS will break their IMEI if they upgrade to EFS v2 ROMS."
My IMEI is ok. So I guess I didn't have ariza patch installed. That's a relief.
Anyway... I think I'll wait a bit. Maybe it'll fix itself ( I'm just lying to myself here haha).
Ok more question RickEphraims. Why exactly I need a "patched" modem? I don't want to revert to EFS v1. I just want my phone to work properly. Wouldn't it the same to flash stock MG4 modem again?
I'm no expert but the patched MG4 modem has worked for lots of people. It's still an MG4 modem.
RickEphraims said:
I'm no expert but the patched MG4 modem has worked for lots of people. It's still an MG4 modem.
Click to expand...
Click to collapse
Ok. Thanks.
I will try to flash this version:
And then restore the EFS partition.
Or should I do it the other way (efs first and then flash).
I want to stay official. This is not a phone I will be using so I don't want to leave a root in place or anything like that.
Any advice on this regard?
Flash original firmware and restore EFS.
That should put it back to stock
---------- Post added at 09:53 AM ---------- Previous post was at 09:51 AM ----------
I'm not really qualified to give you advice.
I'm just speaking from experience of what I've done to fix mine after flashing an MG4
I hadn't backed up EFS so it was way harder
Gonzakpo said:
Before someone tells me, YES I know this is a common problem and YES I know there are lots of thread that talk about this particular subject.
But I think I'm having a different problem.
I had a I9300 unbranded that, for some reason, didn't wanted to update through Kies or OTA. But It could make calls and send txt msgs.
I decided to update it manually using ODIN to the latest official firmware for my phone (XEF - France). I downloaded it from Sammobile. Everything went perfect. Then I wiped everything to just to be safe.
Everything works great. Wifi, Apps, everything. Except making calls or sending txt msgs. It says "not registered on network".
My IMEI is still the same as before (the efs didn't get corrupted I guess).
Anyway, I have a backup from every partition. So I can get back to the previous state. But I want to fix this problem! Does anyone knows what's wrong?
I use to have this:
PDA: I9300XXBLH3
MODEM: I9300XXLH1
CSC: I9300XEFBLH2
Product Code: XEF
Country: France
And I flashed this:
PDA: I9300XXEMG4
MODEM: I9300XXEMG4
CSC: I9300XEFEMG2
Product Code: XEF
Country: France
Did I do something wrong?
Click to expand...
Click to collapse
Easiest to try and check COULD BE:
1. Goto setting-> More Networks-> Mobile networks -> Network operators
2. Search for network service provider and select it !
Ok. So I flashed the previous official stock firmware (efs v1). As expected, the IMEI wasn't ok. So I restored my EFS v1 backup. IMEI was ok again. But I still get "no network".
I'm now going back to the original firmware (4.0.4) to see if it starts working again.
The phone is unbranded and apparently from France (XEF). Can I flash any other firmware? France is not my country although firmware 4.0.4 worked alright.
Also, Is there a way to know if Ariza patch was installed before I got the phone?
Check the phone serial number matches the one under the battery. Ariza patch fixes serial number problem on efs v1 only, it didn't fix imei issues.
If it's an i9300 then any firmware will work, you say 'apparently' from France, you should know this information -it is suspicious that do not.
Sent from my GT-I9300 using Tapatalk
News news. I flashed back the original firmware 4.0.4. It didn't work.
To my surprise, the serial number is 00000. THAT is my problem. And I now undestand why it was rooted from the start, probably it had some sort of patch to make it work (like ariza).
Now I'm not sure what to do. Send it to repair (I WILL be expensive in my country) or try the zuluman patched modem. But I guess flashing the patched modem is postponing the inevitable...
What a luck...
There was a post in general forum where a guy edited a file in efs folder to restore serial, you can try that or update to EMG4 rom and apply the patched modem.
You will probably find patched modems get released for newer roms, don't stay on older firmware -they cause SDS.
Edit: the thread about restoring serial I'd actually in q&a, http://forum.xda-developers.com/showthread.php?t=2544109
Sent from my GT-I9300 using Tapatalk

No more 4.4 roms?

Hi all,
Been facing a weird issue ever since I flashed official 4.3 (NB6 with NA8 baseband) with Odin.
I've been able to flash roms back and forth earlier, but ever since the "official" 4.3, I no longer get network signal in KK roms. IMEI is empty and baseband is unknown. WiFi works fine though.
Tried flashing different modems but nothing works. The closest I got to getting a signal was for 1 second and then dropped (keeps getting and dropping). Searched the forums but it seems to be very rare.
Always have to restore to official 4.3 via Odin to get a working phone
Any ideas on this or maybe Sammy doesn't like me anymore ?
~ RazorMC
RazorMC said:
Hi all,
Been facing a weird issue ever since I flashed official 4.3 (NB6 with NA8 baseband) with Odin.
I've been able to flash roms back and forth earlier, but ever since the "official" 4.3, I no longer get network signal in KK roms. IMEI is empty and baseband is unknown. WiFi works fine though.
Tried flashing different modems but nothing works. The closest I got to getting a signal was for 1 second and then dropped (keeps getting and dropping). Searched the forums but it seems to be very rare.
Any ideas on this or maybe Sammy doesn't like me anymore ?
PS: I tried sammy's 4.3-based roms and all was ok, but the official update really messed things up bad.
~ RazorMC
Click to expand...
Click to collapse
I Was Having the same problem,not with my Phone,but an Friend Phone. No imei and Hardware serial changed. Resolved using my Samsung Box. Maybe you need one of those. i think is the last stand :good:
could be a csc problem
i am not sure though
also was the firmware for your region
below link may help
http://forum.xda-developers.com/galaxy-s3/help/i9300-service-sim-card-gps-fix-solution-t2738219
dheeraj (dhlalit11) said:
could be a csc problem
i am not sure though
also was the firmware for your region
below link may help
http://forum.xda-developers.com/galaxy-s3/help/i9300-service-sim-card-gps-fix-solution-t2738219
Click to expand...
Click to collapse
I had seen the thread earlier but it doesn't mention much except cm 10.1 and "some" setting lol.
Firmware is right (UAE) according to sammobile. I will look into CSC though. I used to be able to flash from official 4.1.2 to TW-based and AOKP-based 4.3 and 4.4 as well, but the official 4.3 firmware was bad news (pretty smooth rom though)
I'm guessing that the NB6 fw hampers baseband/radio to prevent KK roms from reaching S3 users. Kind of like a hidden Knox or something.
~ RazorMC
Tried CM 10.1.3 but no signal even with patched modem MG4.
This is really frustrating lol. I got the S3 to play with roms and now it's over?
Any other ideas ppl on what I could do for this?
~ RazorMC
This is rather an EFS problem than CSC.
Read the EFS threads.
hey
RazorMC said:
Hi all,
Been facing a weird issue ever since I flashed official 4.3 (NB6 with NA8 baseband) with Odin.
I've been able to flash roms back and forth earlier, but ever since the "official" 4.3, I no longer get network signal in KK roms. IMEI is empty and baseband is unknown. WiFi works fine though.
Tried flashing different modems but nothing works. The closest I got to getting a signal was for 1 second and then dropped (keeps getting and dropping). Searched the forums but it seems to be very rare.
Always have to restore to official 4.3 via Odin to get a working phone
Any ideas on this or maybe Sammy doesn't like me anymore ?
~ RazorMC
Click to expand...
Click to collapse
Tried flashing MG4 modem????? :cyclops::cyclops::cyclops:
Benko111 said:
This is rather an EFS problem than CSC.
Read the EFS threads.
Click to expand...
Click to collapse
One thing I came across was to downgrade efs from v2 to v1 using the rescue firmware. I don't know if that is safe or will it even work.
shazzy1 said:
Tried flashing MG4 modem????? :cyclops::cyclops::cyclops:
Click to expand...
Click to collapse
Tried it, doesn't work
I'm stuck on official 4.3.
~ RazorMC
Install Samsung kies 3 from here
http://www.samsung.com/uk/support/usefulsoftware/KIES/
Run kies then go to Tool > Firmware Upgrade and Installation
Follow the on screen instructions, this should completely reset the phone to a working condition.
MK6 is stable
Try to use MK6 complete suite, then apply MK6 patched modem and kernel not only patched modem. I don't know why people say flash MG4 modem, it will never work alone. You must need patched kernel to make it work or use ariza patch in older releases.
ag4751 said:
Install Samsung kies 3 from here
http://www.samsung.com/uk/support/usefulsoftware/KIES/
Run kies then go to Tool > Firmware Upgrade and Installation
Follow the on screen instructions, this should completely reset the phone to a working condition.
Click to expand...
Click to collapse
I prefer Odin over Kies any day. It's better for flashing imo.
Point is, I can use stock 4.3 rom without any problems, but my issue is that I can no longer change to non-TW roms, esp KK.
galliard said:
Try to use MK6 complete suite, then apply MK6 patched modem and kernel not only patched modem. I don't know why people say flash MG4 modem, it will never work alone. You must need patched kernel to make it work or use ariza patch in older releases.
Click to expand...
Click to collapse
Gonna try this now. I'm aiming for KK roms, so I guess Ariza won't help me here.
PS: I can get stock 4.3 without any problems. The signal problem occurs in non-TW roms only. I wanted signal on a 4.4-based rom.
~ RazorMC
RazorMC said:
One thing I came across was to downgrade efs from v2 to v1 using the rescue firmware. I don't know if that is safe or will it even work.
Tried it, doesn't work
I'm stuck on official 4.3.
~ RazorMC
Click to expand...
Click to collapse
can you tell me what error is thrown????
(i) you have CWM r8?
(i) download a cwm flashable MG4 Modem, looks like your phone has an EFS issue (had this issue once).
shazzy1 said:
can you tell me what error is thrown????
(i) you have CWM r8?
(i) download a cwm flashable MG4 Modem, looks like your phone has an EFS issue (had this issue once).
Click to expand...
Click to collapse
I don't get any signal on KitKat roms. IMEI is empty and baseband is unknown in "About" section. That is my issue.
Stock 4.3 works fine for me
I've tried MG4 and MK6 modem and restoring efs via Philz Recovery 6.07.9 but no luck. I get a network signal that keeps dropping most of the time. This is strange because I haven't come across this problem before. Everytime I have to flash stock via Odin.
I need to find out why this happens so I can help others if they have the same issue.
EFS is ok and not damaged at all. The problem is that the system can't read the EFS, but I can't figure out what I need to do to get it to work.
~ RazorMC
RazorMC said:
I don't get any signal on KitKat roms. IMEI is empty and baseband is unknown in "About" section. That is my issue.
Stock 4.3 works fine for me
I've tried MG4 and MK6 modem and restoring efs via Philz Recovery 6.07.9 but no luck. I get a network signal that keeps dropping most of the time. This is strange because I haven't come across this problem before. Everytime I have to flash stock via Odin.
I need to find out why this happens so I can help others if they have the same issue.
EFS is ok and not damaged at all. The problem is that the system can't read the EFS, but I can't figure out what I need to do to get it to work.
~ RazorMC
Click to expand...
Click to collapse
are custom 4.3's working fine mate tried any????
[SOLVED]
Problem: Upgraded to official 4.3 and since then I have not been able to get network signals on 4.4-based roms. Stock 4.3 works fine.
Solution: Installed stock 4.1.2 (even though people said it doesn't work). Lost my signal and IMEI became 0049. Then I installed the patched MG4 modem and got imei and signal back. Then upgraded to Resurrection Remix rom (without GApps first) and still had signal.
Credits:
shazzy1 said:
Tried flashing MG4 modem????? :cyclops::cyclops::cyclops:
Click to expand...
Click to collapse
and
galliard said:
Try to use MK6 complete suite, then apply MK6 patched modem and kernel not only patched modem. I don't know why people say flash MG4 modem, it will never work alone. You must need patched kernel to make it work or use ariza patch in older releases.
Click to expand...
Click to collapse
and
SamMobile
:good: Thanks to all who posted here and helped me with ideas.
~ RazorMC
Glad u found a fix
Sent from my GT-I9300 using XDA Free mobile app
Hi,
I'm in the exact same situation, stock 4.3 work's fine but every time i flash some 4.4 rom, i lost imei / baseband (generic imei and unknown baseband) and the phone is just useless.
After i flashed a 4.4 rom and lost signal, i tried to flash every modem / patched modem that i could find on xda but no luck.
Any ideas of a method that would allow me to flash any 4.4 or 5.0 rom without losing imei / baseband ??
Thx
As you found this long dead thread why not try the solution they found?
boomboomer said:
As you found this long dead thread why not try the solution they found?
Click to expand...
Click to collapse
Because I cannot get my imei / baseband back after flashing the modem on top of 4.1.2.
So I was wondering if there's anything else to try in my situation (stock tw 4.3)
Anyway, Thx for your help...

[Q] Not Registered on Network

Good day, my Samsung S3 gave the Not Registered on Network problem a few weeks back, before the error i did install a custom rom but did follow the instructions accordingly and it worked fine and i could still make and receive calls and texts the problem only accured a few weeks after the custom rom, then i tried installing the official rom back on but the Not Registered on Network was still there i did try the fix with Azura Patch and installing the modem files but didn't work i can't accses my Product code using the *2767*4387264636# or any thing on the dailpad, what else can i do i am currently on the official I9300XXUGNA8 and residing in South Africa, my phone was a Vodafone because when i started the phone their logo would show but it doesn't any more
Android Version 4.3
Baseband Version I9300XXUGNA8
Network: Unknown
Service State: Out of service (There is 3G coverage in my area)
Mobile Network state: Disconnected
My IMEI number correspond on my device at the back and on the settings/About Device/Status
Thank you in Advance for your trouble.
Restore the efs backup you made before you first flashed, no backup then pay for a repair.
boomboomer said:
Restore the efs backup you made before you first flashed, no backup then pay for a repair.
Click to expand...
Click to collapse
Good day thx for your reply, i didn't make a efs backup, but i did read about it just now, but i made a few mistakes on my original post i forgot to insert a sim card so it does show Network RSA Cell C, and my IMEI number is correct, so what can i do to repair it myself, there isn't a repair shop that can do this kind of thing my only other option is to send it in and that would cost a small fortune.
Thank you
Try installing a patched modem and kernel together, if that doesn't work then you are stuck, sorry.
boomboomer said:
Try installing a patched modem and kernel together, if that doesn't work then you are stuck, sorry.
Click to expand...
Click to collapse
Thx again for quick reply my base band version is I9300XXUGNA8 i am in south africa where can i find kernel and modem files for this version or would any do can i try to download the previous version of the official firmware android 4.1.1 and then use the ariza patch because if i try to use the patch and it installs and i try to apply the patch V[0.6] it stays by 0\100 and doesn't download any further
Search xda, there is a thread for them.
Andr0id1o1 said:
Thx again for quick reply my base band version is I9300XXUGNA8 i am in south africa where can i find kernel and modem files for this version or would any do can i try to download the previous version of the official firmware android 4.1.1 and then use the ariza patch because if i try to use the patch and it installs and i try to apply the patch V[0.6] it stays by 0\100 and doesn't download any further
Click to expand...
Click to collapse
list the problem man like
1 do you have network
2 is your imei no same as written in the back
3 is you phone carrier flagship
jasi275 said:
list the problem man like
1 do you have network
2 is your imei no same as written in the back
3 is you phone carrier flagship
Click to expand...
Click to collapse
He answered already that he has IMEI.
Andr0id1o1 said:
Thx again for quick reply my base band version is I9300XXUGNA8 i am in south africa where can i find kernel and modem files for this version or would any do can i try to download the previous version of the official firmware android 4.1.1 and then use the ariza patch because if i try to use the patch and it installs and i try to apply the patch V[0.6] it stays by 0\100 and doesn't download any further
Click to expand...
Click to collapse
Don't apply ariza, you will lose IMEI, it is meant for 4.1.2 not 4.3 android.
Flash Boeffla kernel and then this patched modem. [MODEM]
You can install boeffla via CWM (cwm.zip) or via odin (tar.md5), if you have cwm, install via it, and then install patched modem also.
Thx for the info, one thing i cant download the modem file tried using chrome and IE but said this webpage is not available.

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