[Q] I am ****ED !!! lost IMEI number - Galaxy S III Q&A, Help & Troubleshooting

Hello everyone.
Had a custom rom installed (Yes I know that can be dangerous, but do it allmost everyday) But my problem is that my IMEI changed to 00049 ...... and now I don't have any network.(Nope never used that efs backup)
So I did find a guide to restore my IMEI by deleting the efs folder and copy som date back from from my SD card, but that didn't work, tried to flash another rom and now the internal SDcard i also formatted, så no backup at all
My problem is that in the efs folder somthing is missing the imei folder and now my phone don't connet? What rom do I need to install and hvad tool / guide do I need to follow to restore my network connection.
/Otto
PS: I think I allmost have done the same thing as this guy http://forum.xda-developers.com/showthread.php?t=1862127

If U dont have efs backup then only way is sending phone for repair. But ure going 2 pay as warranty is void.
You can try this: http://forum.xda-developers.com/showthread.php?t=1918601
Worked for me on another i9300 I had but only gave me gprs no 3g connection.
Sent from my GT-I9300 using xda app-developers app

Usually when the number changes it is due to the folder just not being read by the rom, flashing a stock rom via odin often resolves this. By wiping the partition you've completely destroyed it, as above you can't now do anything without a backup.
Following the first thing you find can often make things worse, best research fully before flashing anything.

u have flash a MG4 rom ? If so then u MUST use the MG4 modem .. all other modems not working and let u lose IMEI ... its bec of change EFS partion ..its not broken only change other format .... u can read here http://forum.xda-developers.com/showthread.php?t=2377731

He wiped the efs folder, nothing is going to bring it back apart from a backup.

So far so good
Hello everyone.
I manage to get somthing of an idea here:
http://forum.xda-developers.com/showthread.php?t=1804117
But my problem is to find a rom where I can use the hidden menu?
http://forum.xda-developers.com/showthread.php?t=1815580
So right now I can't see these settings: RMNET + DM + MODEM (RMNet = USB virtual Ethernet framework; DM = Diagnostic Mode; Modem = self-explanatory)
So I am trying to download a Odin ROM ala: http://forum.xda-developers.com/showthread.php?t=2187081
/Otto

What ROM did you flash?? Did you change your modem??

Where are you?
Sent from my GT-P6810 using xda app-developers app

pinsb said:
Where are you?
Sent from my GT-P6810 using xda app-developers app
Click to expand...
Click to collapse
It is not going very well at the moment, still have problems loading the right rom using Odin, maybe I will try to download the EBM6 Rom and flash via Odin.

No /Wrong IMEI/ EFS
Restore backed up EFS folder
No backup then try flashing a stock rom via Odin .
Fails = service centre .
Links methods you have posted OP are not for this phone .

otto_di2 said:
So right now I can't see these settings: RMNET + DM + MODEM (RMNet = USB virtual Ethernet framework; DM = Diagnostic Mode; Modem = self-explanatory)
/Otto
Click to expand...
Click to collapse
Because you don't have a qualcomm phone. You have Exynos

JJEgan said:
No /Wrong IMEI/ EFS
Restore backed up EFS folder
No backup then try flashing a stock rom via Odin .
Fails = service centre .
Links methods you have posted OP are not for this phone .
Click to expand...
Click to collapse
OK nothing else to do

otto_di2 said:
OK nothing else to do
Click to expand...
Click to collapse
The service center says it is my own problem, so they wont fix it, have a ceap phone?

otto_di2 said:
The service center says it is my own problem, so they wont fix it, have a ceap phone?
Click to expand...
Click to collapse
Correct but did they not offer a paid for repair ??
jje

JJEgan said:
Correct but did they not offer a paid for repair ??
jje
Click to expand...
Click to collapse
you should try to get a z3xbox or a a smart sam box to write back the original imei number. this worked with my new pcb.

Androm3d-vzla-v3.0
This was the ROM that killed my IMEI, think that I need to buy a Z3X-BOX or something like that to restore my phone

Related

[Q] Network Problem on my Samsung S2 plzzzz Help its urgent!!!

i i flashed the the official samsung 2.3.4 rom in my s2 all works fine it also shows network but when we chek balance or call it says mobile network not available in phone status in the setting every thing is ok but service state it says out of service.tried 4 sim card which work fine on different mobile but not in my s2 plzzzzzzzzzz help!!!!!!!!!!!!!
Is ur IMEI is showing correct ?
Sent from my GT-I9100 using xda premium
vakas_2007 said:
i i flashed the the official samsung 2.3.4 rom in my s2 all works fine it also shows network but when we chek balance or call it says mobile network not available in phone status in the setting every thing is ok but service state it says out of service.tried 4 sim card which work fine on different mobile but not in my s2 plzzzzzzzzzz help!!!!!!!!!!!!!
Click to expand...
Click to collapse
What do you mean official 2.3.4 which one .
Did you flash the correct CSC for your network .
Is your IMEI correct and if not restore from your backed up EFS folder .
jje
smilingcruel said:
Is ur IMEI is showing correct ?
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
ya it does not shows my correct imei
plzzz help wht to do
if you have a backup of your EFS folder then go to this thread and READ CAREFULLY: this can be recovered if you have backed up your EFS.
http://forum.xda-developers.com/showthread.php?t=1308546
http://forum.xda-developers.com/showthread.php?t=1314719
hope that helps...
marekPLPH said:
if you have a backup of your EFS folder then go to this thread and READ CAREFULLY: this can be recovered if you have backed up your EFS.
http://forum.xda-developers.com/showthread.php?t=1308546
http://forum.xda-developers.com/showthread.php?t=1314719
hope that helps...
Click to expand...
Click to collapse
no i dont have my efs backup
oh well just use the phone as MP3 player Camera etc
Or search the restore IMEI threads / restore EFS folder threads might even be in the stickies section .
Next time follow rule one Back up your EFS first ..Rule two is understand before you flash what you are doing as it saves another brick in the SGS2 wall .
jje
JJEgan said:
oh well just use the phone as MP3 player Camera etc
Or search the restore IMEI threads / restore EFS folder threads might even be in the stickies section .
Next time follow rule one Back up your EFS first ..Rule two is understand before you flash what you are doing as it saves another brick in the SGS2 wall .
jje
Click to expand...
Click to collapse
can u give me the link of efs restore
vakas_2007 said:
can u give me the link of efs restore
Click to expand...
Click to collapse
If you have root, try this tool if it doesnt work, flash your phone back to stock, reset the flash counter with a USB jig and send it to samsung saying that it suddenly stopped working.
If you have never flashed a custom rom, then just send it back to samsung (Make sure the flash counter is 0 and you have no yellow triangle and that its on the firmware your phone came with)
veyka said:
If you have root, try this tool if it doesnt work, flash your phone back to stock, reset the flash counter with a USB jig and send it to samsung saying that it suddenly stopped working.
If you have never flashed a custom rom, then just send it back to samsung (Make sure the flash counter is 0 and you have no yellow triangle and that its on the firmware your phone came with)
Click to expand...
Click to collapse
my phone warranty period is still there will they repair my phone??????
vakas_2007 said:
my phone warranty period is still there will they repair my phone??????
Click to expand...
Click to collapse
i dont know the stock version which came with only know tht it was 2.3.3
i buyed from uk my phone is made in south korea
Oh dear...
If you dont know then suggest flash any relevant UK stock rom .
jje
JJEgan said:
If you dont know then suggest flash any relevant UK stock rom .
jje
Click to expand...
Click to collapse
is thr any chance they can repair my phone

[Q]Corrupt IMEI no efs backup

Hi guys, well i managed to somehow ****up my efs folder and it now says no baseband and imei/imeid.
I have searched and searched for but closes thing i was able to find was using nv writer to write my old imei back onto my phone. The problem is when I *#7284# I have no option to choose DM + ADB + <cant remember other option> I only have PDA or MODEM option.
Please help,
GS3 I9305T with root access.
Entrio said:
Hi guys, well i managed to somehow ****up my efs folder and it now says no baseband and imei/imeid.
I have searched and searched for but closes thing i was able to find was using nv writer to write my old imei back onto my phone. The problem is when I *#7284# I have no option to choose DM + ADB + <cant remember other option> I only have PDA or MODEM option.
Please help,
GS3 I9305T with root access.
Click to expand...
Click to collapse
Can you try kTool?
K-tool does not work, which is why Prodigy got me to type a command line in the terminal which backed up my EFS folder manually. Now I have an EFS.IMG This is why i put up the THread Because I knew it was soon someone will be bound to stuff up there EFS.. Which is WHY WE ALL NEED TO BACK UP OUR EFS ASAP before we start modding
But as for recovery its hopeless? Can a box be used to restore the imei? Anyway i can write my imei using nvwriter after somehow solving the problem of not being able to put my phone into diagnostics mode?
Argh! I am going insane, this is looking like a one dear mistake!
I had the exact same problem. Tried MANY things, with no luck. If you got yours from Optus less than 30 days, they will give you a brand new replacement phone .
Try to install a stock rom like 4.0.4... that worked for me on a S1 with the same problem and fixed it!
Entrio said:
Hi guys, well i managed to somehow ****up my efs folder and it now says no baseband and imei/imeid.
I have searched and searched for but closes thing i was able to find was using nv writer to write my old imei back onto my phone. The problem is when I *#7284# I have no option to choose DM + ADB + <cant remember other option> I only have PDA or MODEM option.
Please help,
GS3 I9305T with root access.
Click to expand...
Click to collapse
I have the same issue although it happened to me when I flashed a rom to ROOT my device and I didn't back up the EFS, now it doesn't read the SIM/Network and my Baseband & IMEI are Unknown.
I have tried re-installing the stock firmware etc but still no success...
Anyone have any suggestions?? Or at least how I can update my device status back to normal a pose to 'Modified'.. This was I could maybe submit it through warranty repair.. I have tried to reset my binary count with triangle away (before unrooting) but no success as.. The only thing i've managed to be able to do is unroot my device..
Please help!
Thanks...:fingers-crossed:
if you dont mind about the reading , u can still use your phone flawlessly.. and try the trick "oh im not sure , oh i dont know" and get one replace or u will need jtag i guess.. or maybe ( not sure if it work ) get someone else backup efs and find a way to put your imei in and push it back to your device.. and then repeat same procedure with your original imei ... if u cant remember , take a look at your box.. well..i am just suggesting..not sure if it work...
to get rid of modified , go download sammy official release for your telco or country , flash it with odin but the binary counter remains... good luck to u..
prodigiez said:
if you dont mind about the reading , u can still use your phone flawlessly.. and try the trick "oh im not sure , oh i dont know" and get one replace or u will need jtag i guess.. or maybe ( not sure if it work ) get someone else backup efs and find a way to put your imei in and push it back to your device.. and then repeat same procedure with your original imei ... if u cant remember , take a look at your box.. well..i am just suggesting..not sure if it work...
to get rid of modified , go download sammy official release for your telco or country , flash it with odin but the binary counter remains... good luck to u..
Click to expand...
Click to collapse
Trouble is there is no Telstra official stock rom yet, only optus. I've heard jtags dont work either.
Entrio said:
Trouble is there is no Telstra official stock rom yet, only optus. I've heard jtags dont work either.
Click to expand...
Click to collapse
Happy to give you mine if at all you need to workout how to inject your own imei?
not sure it is safe sharing imei numbers? any idea.
narcarsiss said:
Happy to give you mine if at all you need to workout how to inject your own imei?
not sure it is safe sharing imei numbers? any idea.
Click to expand...
Click to collapse
I've got mine on the box i got the phone with, i am not sure how i cna inject mine into it. The nv writer doesnt seem to be working as i can put my phone into DM mode. But if u could backup efs folder and upload it, i can give it a crack. If it won't work, I am still sending my phone away back to Telstra on monday
Entrio said:
I've got mine on the box i got the phone with, i am not sure how i cna inject mine into it. The nv writer doesnt seem to be working as i can put my phone into DM mode. But if u could backup efs folder and upload it, i can give it a crack. If it won't work, I am still sending my phone away back to Telstra on monday
Click to expand...
Click to collapse
Would a EFS pro backup.img be ok? or do you want the whole uncompressed folder?
EFS Pro img would be fine (i assume) it's a final shot before i ship it off.
Thanks mate!
Entrio said:
EFS Pro img would be fine (i assume) it's a final shot before i ship it off.
Thanks mate!
Click to expand...
Click to collapse
I read last night that if you flash the original OTA over your phone it will re write your IMEI number and if Telstra's one is not out just use one from AT&T or Optus etc..
So you can make a back up of your EFS and go from there with re rooting and applying a new baked rom.
Either way if can work or it can not. i see no harm
Anyway here is the EFS taken' just now
you should never share your EFS folder with someone else. Due to the fact each imei is unique.
Questions or Problems Should Not Be Posted in the Development Forum
Please Post in the Correct Forums & Read the Forum Rules
Thanks ✟
Moving to Q&A
This thread is wrong on so many levels. Reported.
Sent from my GT-I9300 using xda app-developers app
Entrio said:
Hi guys, well i managed to somehow ****up my efs folder and it now says no baseband and imei/imeid.
I have searched and searched for but closes thing i was able to find was using nv writer to write my old imei back onto my phone. The problem is when I *#7284# I have no option to choose DM + ADB + <cant remember other option> I only have PDA or MODEM option.
Please help,
GS3 I9305T with root access.
Click to expand...
Click to collapse
Specifically...did you do this...
Dial *#7284# and click Qualcomm Usb Settings. Then choose RMNET + DM + MODEM and click YES. Exit to homescreen.
themadproducer said:
Specifically...did you do this...
Dial *#7284# and click Qualcomm Usb Settings. Then choose RMNET + DM + MODEM and click YES. Exit to homescreen.
Click to expand...
Click to collapse
I HAVE NO option to select RMNET + DM + MODEM when i dial *#7284#. I only have what i mentioned in the original post
narcarsiss said:
not sure it is safe sharing imei numbers? any idea.
Click to expand...
Click to collapse
No, it is not. And also illegal. I have removed the link for you.
OP, hope you get it worked out, but this will only cause more trouble than it already has.

[Q] [SOLVED] Lost IMEI but EFS seems fine

After flashing a modem I had no network. I've checked and I have no IMEI. When I type *#06# the box is just empty.
I already restored an EFS backup I've made, and the EFS folder seems ok.
Also, the modem I flashed was the stock one.
Do anyone have an ideia of what can I do to recover my IMEI?
I think you have installed the wrong Modem driver, try to get the official one from other sources and try again.
Sent from my SHV-E210S using xda app-developers app
evantkh said:
I think you have installed the wrong Modem driver, try to get the official one from other sources and try again.
Sent from my SHV-E210S using xda app-developers app
Click to expand...
Click to collapse
Nope, it is the correct stock modem. I also reflashed my previous one and it still has no IMEI.
Modem has nothing to do with a lost IMEI .
Restore backed up EFS and or factory reset .
Fails try a stock rom flash .
jje
JJEgan said:
Modem has nothing to do with a lost IMEI .
Restore backed up EFS and or factory reset .
Fails try a stock rom flash .
jje
Click to expand...
Click to collapse
Yeah, but I only lost IMEI after flashing the modem. I had flashed modems before (even this one) and never had problems, so something must had gone wrong.
Already restored a backed up EFS.
If I don't find any fix I guess I'll try a stock rom flash...
Type *#1234# and see if baseband is unknown. If so then flash another modem.
Another thing to check is that if stock samsung dialer is not working imei will say null.
Sent from my GT-I9300 using xda premium
JJEgan said:
Modem has nothing to do with a lost IMEI .
Restore backed up EFS and or factory reset .
Fails try a stock rom flash .
jje
Click to expand...
Click to collapse
Incorrect. If there is no modem installed, it will not report the IMEI number.
kryten2k35 said:
incorrect. If there is no modem installed, it will not report the imei number.
Click to expand...
Click to collapse
the reply was to wrong modem.
Jje
Thanks everyone for your suggestions.
I've restored a full backup and now everything's fine again
Pleass help
abmantis said:
Thanks everyone for your suggestions.
I've restored a full backup and now everything's fine again
Click to expand...
Click to collapse
can u upload hare nv or efs backup i have e210s but i don't have completely backup for efs
my problem is imei empty
Your question has been posted multiple times . Forum rules require you to search before posting .
Google <<< I9300 your search terms > xda
STICKYS
http://forum.xda-developers.com/showthread.php?t=2344125
UNDERSTAND FIRST
http://forum.xda-developers.com/showthread.php?t=2362743
Network IMEI EFS
http://forum.xda-developers.com/showthread.php?t=2393289
Downgrade and network problems .
http://forum.xda-developers.com/showthread.php?t=2531221

[Q] No Network Signal after flashing

Hi
I decided to try one of the leaked 4.2.2 roms for my Samsung galaxy S3
I made a nandroid backup in CMW recovery before doing so
Flashed the rom and all worked ok but would not connect to my network (EE/Orange UK)
I tried another custom rom same story
Ok so i thought i better recover my nanroid recovery
booted into CMW and it cant mount the SD card
So i used S3 Toolkitv7 to download a stock rom and flash via odim
Again stock rom will not connect to EE/orange
So now im truely stuck
Help
snakemetal said:
Hi
I decided to try one of the leaked 4.2.2 roms for my Samsung galaxy S3
I made a nandroid backup in CMW recovery before doing so
Flashed the rom and all worked ok but would not connect to my network (EE/Orange UK)
I tried another custom rom same story
Ok so i thought i better recover my nanroid recovery
booted into CMW and it cant mount the SD card
So i used S3 Toolkitv7 to download a stock rom and flash via odim
Again stock rom will not connect to EE/orange
So now im truely stuck
Help
Click to expand...
Click to collapse
Did you make sure you backed up your efs partition?
What is your IMEI showing (DON'T PUT THE WHOLE NUMBER, only the first 7 digits)
IMEI is in Settings --> Device --> Status
pinsb said:
Did you make sure you backed up your efs partition?
What is your IMEI showing (DON'T PUT THE WHOLE NUMBER, only the first 7 digits)
IMEI is in Settings --> Device --> Status
Click to expand...
Click to collapse
Hi
No i didnt back that up it wasn't an option i remember seeing in the CWM backup
The IMEI just says unknown
snakemetal said:
Hi
No i didnt back that up it wasn't an option i remember seeing in the CWM backup
The IMEI just says unknown
Click to expand...
Click to collapse
If your IMEI is unknown that's why you're not registering on the network and with no efs backup that's a problem.
Who did you buy the phone from?
pinsb said:
If your IMEI is unknown that's why you're not registering on the network and with no efs backup that's a problem.
Who did you buy the phone from?
Click to expand...
Click to collapse
I bought the phone from Phones 4 U in the UK
snakemetal said:
I bought the phone from Phones 4 U in the UK
Click to expand...
Click to collapse
You could try ringing them and tell them it happened during a kies update and see if they'll repair it under warranty, else whereabouts in the country are you?
pinsb said:
You could try ringing them and tell them it happened during a kies update and see if they'll repair it under warranty, else whereabouts in the country are you?
Click to expand...
Click to collapse
Ive flashed another stock rom and its now showing a IMEI number
0049990
But still will not register on any network
So have i bricked my phone?
i still have the nandroid backup on my pc
snakemetal said:
Ive flashed another stock rom and its now showing a IMEI number
0049990
But still will not register on any network
So have i bricked my phone?
i still have the nandroid backup on my pc
Click to expand...
Click to collapse
See my previous reply.
0049990 is a generic IMEI if your efs gets deleted/corrupted..it won't register on the network.
pinsb said:
See my previous reply.
0049990 is a generic IMEI if your efs gets deleted/corrupted..it won't register on the network.
Click to expand...
Click to collapse
Does the nandroid backup not contain this information?
snakemetal said:
Does the nandroid backup not contain this information?
Click to expand...
Click to collapse
NO
But if you did not backup EFS folder .
you can try a restore of Nandroid .
Fails try flash stock rom via Odin .
Fails its a paid for service repair .
jje
JJEgan said:
NO
But if you did not backup EFS folder .
you can try a restore of Nandroid .
Fails try flash stock rom via Odin .
Fails its a paid for service repair .
jje
Click to expand...
Click to collapse
Yes they all failed
My EMEI number is written on the phone is there no software i can get to rewrite it?
Who can i pay?
snakemetal said:
Yes they all failed
My EMEI number is written on the phone is there no software i can get to rewrite it?
Who can i pay?
Click to expand...
Click to collapse
A service centre .
jje
snakemetal said:
Yes they all failed
My EMEI number is written on the phone is there no software i can get to rewrite it?
Who can i pay?
Click to expand...
Click to collapse
Hi if you flash your phone back to stock firmware the original firmware you got with the phone then take it back to phones 4 u and just say i rebooted my phone and now my imei has changed and they should repair it for free or give you a replacement if its new they should just replace it
jae1512 said:
Hi if you flash your phone back to stock firmware the original firmware you got with the phone then take it back to phones 4 u and just say i rebooted my phone and now my imei has changed and they should repair it for free or give you a replacement if its new they should just replace it
Click to expand...
Click to collapse
Im going to try that
Any idea what stock firmware Orange/EE use
Ive had a look and can see a orange and a UK generic stock rom but i dont remember my phone coming with any orange branding
which make me think as they changed to EE they might of used generic
If i guess wrong im sure they will know
snakemetal said:
Im going to try that
Any idea what stock firmware Orange/EE use
Ive had a look and can see a orange and a UK generic stock rom but i dont remember my phone coming with any orange branding
which make me think as they changed to EE they might of used generic
If i guess wrong im sure they will know
Click to expand...
Click to collapse
I flashed EE stock firmware and also followed the guide on this site for resetting the yellow triangle
Sent it back to Phones 4 you they had it for nearly 1 month
But got it back fixed and done under warranty
Next job to backup the IMEI
You couldve just flash Mg4 baseband, because your efs partition was changed. Because the latest MG4 baseband does that. Read Efs /IMEI sticky in general section.
Sent from my GT-I9300 using xda app-developers app

[Q]Official rom problems , need help !

I'm getting this little black box quite everywhere I go , and I don't know how to get rid of it . Moreover , my phone does not ask for my sim card's pin and so I can not make cals . I've tried to wipe data and wipe partition cache and nothing , I tried to flash oficial galaxy i9300 rom on it with ODIN , and still the same .. WHAT CAN I DO ?
Code:
You have the screenshot attached :)
alexalghisi said:
I'm getting this little black box quite everywhere I go , and I don't know how to get rid of it . Moreover , my phone does not ask for my sim card's pin and so I can not make cals . I've tried to wipe data and wipe partition cache and nothing , I tried to flash oficial galaxy i9300 rom on it with ODIN , and still the same .. WHAT CAN I DO ?
Code:
You have the screenshot attached :)
Click to expand...
Click to collapse
try the methods posted here for users who are stuck in factory mode just scroll down to see the instructions.
SignetSphere said:
try the methods posted here for users who are stuck in factory mode just scroll down to see the instructions.
Click to expand...
Click to collapse
Thank you ! It doesn't show anymore that black box and it asks for the sim pin when I start the pone , but still no service ( I've tried the sim with other phones and it works )
alexalghisi said:
Thank you ! It doesn't show anymore that black box and it asks for the sim pin when I start the pone , but still no service ( I've tried the sim with other phones and it works )
Click to expand...
Click to collapse
No idea really... but if you know how to flash a stock rom via ODIN you can try that. If flashing back to stock again doesn't help then you probably need to send to Samsung for repair.
No service as per the basic guides stickied in General section .
Please check your IMEI is correct if not restore your backed up EFS folder .
No EFS backup = no fix .
jje
I've just falshed a official firmware rom again , and still no coverage but at least it recognizes the sim .. If I have this new OFFICIAL ROM , and Flash Counters are reseted , I can go with it to warranty ?
If you have followed all the steps in the guide then you will probably get a warranty repair .
jje
Hi !
I'm sorry, , either you flashed it on Odin with "Clear EFS " box ticked, either you flashed firmware for wrong device. (Ex: i9000 for i9300. )
Anyway if you didn't backup EFS the only issue is Reparation Center.
Sent from my GT-I9305 using xda premium
you might be able to restore service if you flash an MG4 or MG5 official rom through Odin. This is only if you previously used an MG4 or MG5 rom and then flashed some other rom which uses an older modem . read this http://forum.xda-developers.com/showthread.php?t=2377731 and http://forum.xda-developers.com/showthread.php?t=2393289
ashraf sharif said:
you might be able to restore service if you flash an MG4 or MG5 official rom through Odin. This is only if you previously used an MG4 or MG5 rom and then flashed some other rom which uses an older modem . read this http://forum.xda-developers.com/showthread.php?t=2377731 and http://forum.xda-developers.com/showthread.php?t=2393289
Click to expand...
Click to collapse
I don't think it will work.
alexalghisi, can you go in Phone Information and check if you have baseband?
If no, warrently, no luck.
In the black box the phone or modem is Mc2. This is an older modem than MG4. When a ROM that uses an MG4 Modem is flashed , it alters the files in the efs Folder making the folder unreadable for earlier firmwares. If OP had ever flashed an MG4 or MG5 ROM . than an MC2 ROM would not be able to read the EFS. as it can only be used by the newer firmware that can read it. If the folder has not been corrupted than it should work.
Sent from my GT-I9300 using xda premium
Once I solved this issue by flashing a custom rom.. but before it I took backup of efs..
Sent from my GT-I9100 using Tapatalk 2
alexalghisi said:
I'm getting this little black box quite everywhere I go , and I don't know how to get rid of it . Moreover , my phone does not ask for my sim card's pin and so I can not make cals . I've tried to wipe data and wipe partition cache and nothing , I tried to flash oficial galaxy i9300 rom on it with ODIN , and still the same .. WHAT CAN I DO ?
Code:
You have the screenshot attached :)
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You just checked something in developers options. Uncheck it and you're good to go
Sent from my GT-I9100
please elaborate. what needs to be done? what was checked and needs to be unchecked?

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