[Q] Unbranded 2.3 UK f/w? - Galaxy S II Q&A, Help & Troubleshooting

Sorry for being a bit dumb, I used to be on XDA all the time when I had my x10 but that's some time ago now!
I want to flash an original unbranded uk 2.3 ROM on to my phone. No tweaks, rooting etc
Can someone please help me find one or link me to the relevant thread?
And once I've got the ROM what do I need to do? With the x10 it was a simple case of place the zip on the sd, boot into xrecovery and flash. Is it the same with the GS2?

Curious as to why you'd want to put a 2.3 GB rom on your phone ? Anyhoo, have a look at this thread. If you find links don't work, note the details of the firmware you want & search Samfirmware.com for it.

Want to install unbranded GB so I can get the official ICS update via Kies. That would work - right?

Yep. If you install 'correct' stock rom for your region it should give you the correct CSC for your country & you should be able to get Kies updates. If it doesn't work, you can always grab ICS stock roms from here/elsewhere & flash them manually.
psx612 said:
Want to install unbranded GB so I can get the official ICS update via Kies. That would work - right?
Click to expand...
Click to collapse

Just a tad confused as there's so many ROMs to choose from!
I've installed Clockwork Mod, is it now just a case of find the correct ROM, stick it on the SD card and boot the phone in recovery?

Doubt you'll find many stock roms that are CWM flashable.
The majority (all ?) are Odin flashable, because people tend to go back to stock to either get a 'clean slate' they can then install custom roms/kernels over if they've had problems, or if they're sending the phone in for warranty service/replacement.

Right, so gotta work out how to use Odin....cheers!
So that means that custom ROMs can be flashed using CWM?
Sent from my GT-I9100 using xda premium

Many (most) custom roms are CWM flashable. Some also have Odin flashable versions.
That's what makes trying custom roms so easy, you backup your existing rom in CWM, flash the rom you want to try, if you don't like it you restore your backup & go back to your previous setup. All in a matter of minutes.
psx612 said:
Right, so gotta work out how to use Odin....cheers!
So that means that custom ROMs can be flashed using CWM?
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse

As to the last post .
I have custom GB rom and want to try but not buy ICS custom rom .
Nandroid backup of full existing GB rom and all apps and settings via CWM recovery .
Flash ICS custom rom via CWM recovery test it make a nandroid backup also .
Boot CWM recovery and go back to the exact GB settup and i can even restore the ICS rom again .
jje

Related

[Q] Kernel

Is it ok to flash a custom kernel on top of another custom kernel?
Sent from my GT-I9100 using xda premium
You dont need to revert on the original one before flash another custom. But you need to format dalvik cache and cache in recovery before flashing or you probably have a bootloop.
I suggest to make a backup of the rom in recovery, so If something goes wrong you can enter recovery and have the latest known working rom back in 2 minutes.
Please note flashing kernels always have a very small chance to corrupt your efs partition, its suggested to backup your efs folder before start play with roms and kernels. How to backup the efs, use the search tool of the forum
Sent from my GT-I9100 using Tapatalk
rembrandtlnx said:
You dont need to revert on the original one before flash another custom. But you need to format dalvik cache and cache in recovery before flashing or you probably have a bootloop.
I suggest to make a backup of the rom in recovery, so If something goes wrong you can enter recovery and have the latest known working rom back in 2 minutes.
Please note flashing kernels always have a very small chance to corrupt your efs partition, its suggested to backup your efs folder before start play with roms and kernels. How to backup the efs, use the search tool of the forum
Sent from my GT-I9100 using Tapatalk
Click to expand...
Click to collapse
Thanks for that. I know how to backup efs. Can i just use nitrality instead of ADB? To flash ROMs does it need to be in a specific firmware like sgsl or is it ok to have different firmware from the base of a custom rom?
Sent from my GT-I9100 using xda premium
I know my english sux sry:
Depends on the kernel but usually it is listed in the kernel thread the how to (odin or clockworkmod), clockworkmode is already on your phone if you rooted it with cf-root.
Now, to enter clockworkmod recovery, just push volume up + home + power button until the S2 bootlogo appears, then wait few seconds.
About the kernel type, i always flashed any kernel despite of my baseband, the difference is not so big.
if something is not working, you can always youse the nandroid backup (the backup done with the recovery cwm (up+home+power) and get back to the previous rom with previous kernel.
Im not really in the kernel "how to" someone else can prolly give you more detailed info, but as for me, i flashed ninphetamine 2.05 and 2.1.3 in cwm and it worked.
But.. as always, the kernel developers got a how to install in their kernel thread, so just read those and be sure about if you need odin or clockworkmod, if you are not sure, DONT flash anything until you are sure on how to proceed or wich system to use for flashing, better keep an old kernel with a working phone than have a brick to hold the papers
PS: also almost all the roms on the S2 forum are flashable with the clockworkmod, only few (like the lite'ning) are flashable with odin.
Again, i know im boring, dont proceed if you are not sure, better ask 10 times instead brick your phone
ephraim033 said:
Is it ok to flash a custom kernel on top of another custom kernel?
Yes not a problem flash as per the custom kernel instructions .
Kernel can be changed within an individual firmware or custom rom .
jje
Click to expand...
Click to collapse
Thanks for the reply guys. Coming back to my second question. What if i have KF1 and the rom i want to flash has a base of KI3, should i flash to stock KI3 first before flashing the custom rom or is it ok to flash a KI3 custom rom without flashing first to stock KI3?
Sent from my GT-I9100 using xda premium
The custom rom first, the kernel after.
I got the habbit to boot succesfully at least once the custom rom. If everything is ok i then flash the kernel. Better do 1 task at time.
You can decide to try the rom without change the kernel..and try a different one if you experience battery drain or other problems.
Sent from my GT-I9100 using Tapatalk
If i am on KH3 and want to flash a custom rom based on KI4 then i would flash stock KI4 and KI4 root first .
Custom rom flashed i will often try a different kernel later .
jje
from my experience
I have found that when i upgraded rom from gingerbread to ics that most custom kernals work with these roms ie now running with xxlpw ics (from gingerbread) with xwlp7 kernal. from what i have read on other posts and threads i could swap kernal to siya or any other as the mega good developers have made them (hotswappable) interchangeable as previous reply said swapping kernal might give you better battery or solve overheat probs.
Eg iwas running darkys rom with siya kernal v?something my phone rocketed temp in short time so i swapped kernal for an up to date one (could have used older one) it solved problem.
Anyone feel free to correct explination im still learning too lol
linuxnubee said:
I have found that when i upgraded rom from gingerbread to ics that most custom kernals work with these roms ie now running with xxlpw ics (from gingerbread) with xwlp7 kernal. from what i have read on other posts and threads i could swap kernal to siya or any other as the mega good developers have made them (hotswappable) interchangeable as previous reply said swapping kernal might give you better battery or solve overheat probs.
Eg iwas running darkys rom with siya kernal v?something my phone rocketed temp in short time so i swapped kernal for an up to date one (could have used older one) it solved problem.
Anyone feel free to correct explination im still learning too lol
Click to expand...
Click to collapse
I'll just point out this thread was dead since Sept 30 before you posted...

[Q] backing up rom/kernel

Hi!
I'm a total noob. This is my first android phone. I've read everything about rooting, and I'd like to install a custom rom, but I'd like to save the stock rom/kernel first. I've found this topic: http://forum.xda-developers.com/showthread.php?t=1075278
I don't really know if these are what I need. Also, I have an xwkf3 device, but it's slightly branded for hungarian T-mobile (the browser has a different name and icon, and it also had every network setting by default).
So, basically I either need someone to tell me which one to download, or better yet, how to create a backup of the whole thing.
Yet again, I'm sorry for asking something probably really stupid. I've tried to google it many times, but I failed to find an answer. Thanks for everyone in advance.
Are you rooted already? If so just boot into ClockworkMod recovery (cwm) and then navigate to backup. (navigate using volume buttons and use home to select)
Sent from my GT-I9100 using xda premium
Here is the kernel rooting thread.
http://forum.xda-developers.com/showthread.php?t=1103399
Dial *#1234# into the phone dialer to find out what firmware you have installed.
Root using chainfires method and make a full backup via CWM.
Flash away. But make sure the Rom/firmware is for your device. Eg i9100 international.
Good luck.
Sent from my GT-I9100 using XDA App
I'm not rooted yet. If I understood everything correctly, the safe kernel is the same for branded/unbranded devices, and only the rom is different?
I'm currently downloading both secure and insecure kernels. After rooting, can I revert back to the secure one to install custom roms?
BTW, thank you for your quick answer
Beco.91 said:
I'm not rooted yet. If I understood everything correctly, the safe kernel is the same for branded/unbranded devices, and only the rom is different?
I'm currently downloading both secure and insecure kernels. After rooting, can I revert back to the secure one to install custom roms?
BTW, thank you for your quick answer
Click to expand...
Click to collapse
I'm not positive but I think if you are rooted and install a stock kernel (without root) you will lose root and won't be able to flash custom roms or make Backups. Its really easy to root, just find the appropriate insecure kernel, flash it with Odin, make backup, and then try new roms!
Sent from my GT-I9100 using xda premium
King Shady said:
I'm not positive but I think if you are rooted and install a stock kernel (without root) you will lose root and won't be able to flash custom roms or make Backups. Its really easy to root, just find the appropriate insecure kernel, flash it with Odin, make backup, and then try new roms!
Sent from my GT-I9100 using xda premium
Click to expand...
Click to collapse
Don't flash back to stock kernel.
Use a jig if you want to get rid of the yellow triangle.
Edit: after flashing one of the cfroot kernels make sure you can get into CWM recovery mode. Vol up+power+home
If you can then you're ok to follow the instructions of the Rom you want to flash.
Sent from my GT-I9100 using XDA App
Thank you. One last question, if I may. Some of the roms I'd try use different kernels, then mine. If I install one of those, and want to revert the phone to factory rom, and kernel, should I root it again with an insecure kernel according to the rom, or one according to my device's current, factory rom?
You will probably find that the Rom kernel will be rooted and have CWM. Just check in the 1st post or 2 of the roms thread.
If you use CWM and make a backup of your stock Rom, after you root now but before you flash any other Rom, you can restore with CWM to get back to stock firmware.
Sent from my GT-I9100 using XDA App
Beco.91 said:
Thank you. One last question, if I may. Some of the roms I'd try use different kernels, then mine. If I install one of those, and want to revert the phone to factory rom, and kernel, should I root it again with an insecure kernel according to the rom, or one according to my device's current, factory rom?
Click to expand...
Click to collapse
To fully return to stock you have to flash a stock rom and stock kernel from Odin. The rom that you want to back up will be a stock rom but it will be rooted because of the rooted kernel. So yea, flashing stock firmware and kernel is the only way to get back to fully stock.
Sent from my GT-I9100 using xda premium
But if I restore my backup rom, and flash it with an original kernel, it would be unrooted, and basically the phoen would be just as it is right now. Is that right?
bck
hi i have the same problem i want to root my gt 2 p5110 but i have to come back at the original values before june and can't loos the warranty....can you help me?

[Q] upgrade before custom roms??

2mrw I'll be getting my brand new I9100T
Now I'm not asking which rom is best ^^ so no infraction needed
...rather...
should I upgrade to official ICS before trying out other roms? or is gingerbread stock a better launching pad?
can we downgrade from ICS?? (I'm assuming b/l is unlocked)
is there a baseband app for SGS-II (like my defy has) -=or=- will I need to manually copy it over?
PS - if it is recommended to officially update... is KIES or CWM better for this?
T.I.A
stock gb for now later u can upgrade to anything
1) Not necessary. Follow whatever instructions the particular rom you want to use has.
2) Yes, you can downgrade from ICS to GB. Simply flash whatever GB rom you want to downgrade to.
3) Baseband app ? I presume you mean modem. Flashing any rom shouldn't change your modem, and many of the GB modems work just fine with ICS I.E modem/baseband is independent of rom/kernel. I'm still using the modem I used with GB, essentially unless you have issues with connectivity/data/calls/SMS that you can't pin down on your carrier's network, no need to change your modem. In saying that, modems are CWM flashable (you can also flash them in Odin), so if you do have connectivity issues & want to try other modems it's pretty easy.
Now, if you meant something else by 'baseband', explain what you mean & I'll try and answer whatever questions you have around that.
@ MistahBungle
On the defy your radio/baseband/modem/yabba_dabba_doo
does change when changing rom - defy has an app for restoring the above...
as it's all android, I'm sure I can do it manually on the S II
so no-one see's official ICS update as beneficial?? Surely it's less buggy than a CM9 -=or=- a MIUIv4!
PS - which recovery should I flash for I9100T??
PSS - Think I'll try MIUI 2.3.9 for a start after I get bored of stock
OK so the modem/baseband is the same thing. On SGS2, roms normally don't come with a modem (I don't think I've seen a single one that has a modem included), these can be changed/flashed independently of the rom/kernel you're using. Again, my advice is if it ain't broke don't fix it; if connectivity/data is fine with the modem you're currently using, no need to mess with it. Yes, you can change them manually yourself easily; most modems are CWM flashable & take a minute to flash.
Whether official ICS (or even a custom ICS rom) is a 'step up' or not depends on how you experience same, I.E. YMMV (like any rom or kernel really). Only way to find out is to try one, which is pretty simple once you've rooted your phone; you can backup your current setup in CWM then try out whatever rom you want. If you find you don't like it, takes only a few mins to restore your backup.
If you use CFRoot to root your phone, it installs CWRecovery by default, which makes backup/restore & flashing roms/kernels/modems a snap. If you do choose to use CFRoot, read the whole first page thoroughly, it's very simple if you pay attention/follow the instructions.
was going to root via 'new' method i.e. .bat file - suppose to root all S 2 variants... it doesn't install CWM but I can do that via Odin...
you use touch recovery??
MistahBungle said:
OK so the modem/baseband is the same thing. On SGS2, roms normally don't come with a modem (I don't think I've seen a single one that has a modem included), t
beg pardon most roms do have a modem stock yes custom ICS yes .
Rare that a rom does not have a modem .
jje
Click to expand...
Click to collapse
Up to you, use whatever method you're comfortable with. Touch recovery ? Have used it when I've used Siyah, but not at the moment as I'm using CM9 kernel. Happy to use it if it's part of a kernel/it is good, but personally can't be arsed installing it seperately if it's not.
@JJE Roms I've used haven't had modems (Yes, stock does.) I.E GB Galnet Miui & CM9 don't.
King_Rat said:
was going to root via 'new' method i.e. .bat file - suppose to root all S 2 variants... it doesn't install CWM but I can do that via Odin...
you use touch recovery??
Click to expand...
Click to collapse
All GB custom roms i have used have modems likewise every ICS custom rom.
Galnet Miui & CM9 only ever tried once so you are probably right for those two . But apart from those sort of builds i have never come across one without a modem . last ten ICS builds i tried have a modem .
jje
i have a 9100t telecom phone,but 2degrees as my provider so i flashed the baseband 9100tdukf4 to get better batterylife with vodafone and 2deg frequencies.
what i did with mine first, i flashed siyah 2.6.14 kernel with odin then used cwm to backup my telecom rom and then flashed away
will manually backup modem ;-) just in case is needed for custom rom...
now another Q: what's all this talk I've been seeing of an internal SD? ^^
How does this affect modding i.e. backing up, restoring nand, flashing roms etc?
well... well... well... 3 holes in the ground ^^
had my 1st soft brick
tried rom manager SII recovery flash (just wanted to see what it would do... just in case it worked) soft-brick...
then flashed CWM via Odin (source galaxy2root[dot]com)
& all is good...
O/C'd to 1.4Ghz with Tegrak & Linpack giving 55+ MFlops!!
Use stock for a wee bit & then I'll get into roms...
PS -Juwe11 RAM script working a treat ;-)
rom manager from the market? i should of said not to use those , i hear they can softbrick the s2.
disable your anti virus while flashing too, nod32 stopped my flashing,soft brick.

Want to try out some custom firmwares, but want to be safe at the same time

Hi guys...
I have a galaxy s3 and up to this point I've been pretty satisfied with the original firmware...
However, I'd like to try out some of custom made ones, but since there's a big update on the way, I want to be safe doing so...
What I mean is basically this:
Can I somehow backup my stock firmware, try out some custom builds and then get the OTA update when it's available?
I don't really care about guarantee, but I'd really like the option to get OTA updates from samsung in the future (if I for some reason want to do so).
I remember an old post, where someone talk about this, but I can't find it
Please help me
Most definitely. You can find stock builds here in this forum and simply flash using ODIN to get back to stock firmware when you want to. Be advised this does wipe your data so have a good backup of it before hand.
Sent from my GT-I9300 using Tapatalk 2
ballsofsteel said:
Most definitely. You can find stock builds here in this forum and simply flash using ODIN to get back to stock firmware when you want to. Be advised this does wipe your data so have a good backup of it before hand.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
And then it would be as my phone never were flashed and OTA and other samsung only stuff would work?
You will have to use triangle away or something like that to reset your flash counter if you want to send your phone to repair and make it appear as you have never flashed before but unless you break your phone, don't bother. And yes the other Samsung stuff should probably work.
Sent from my GT-I9300 using Tapatalk 2
If you flash your phone with a custom ROM for instance Resurrection Remix or Cyanogenmod you'd not directly be able to restore a stock ROM.
You will have to find one http://androidfirmwares.net that's for your region and flash it through Odin. Then you'll be able to update OTA and KIES.
Sent from my GT-I9300 using Tapatalk 2
hjalte81 said:
Hi guys...
I have a galaxy s3 and up to this point I've been pretty satisfied with the original firmware...
However, I'd like to try out some of custom made ones, but since there's a big update on the way, I want to be safe doing so...
What I mean is basically this:
Can I somehow backup my stock firmware, try out some custom builds and then get the OTA update when it's available?
I don't really care about guarantee, but I'd really like the option to get OTA updates from samsung in the future (if I for some reason want to do so).
I remember an old post, where someone talk about this, but I can't find it
Please help me
Click to expand...
Click to collapse
i had the same fear of loosing my data and stuff so you can wipe dalvik cache and cache partition and flash omega ROM for ur S3 and welcome to perfection.
Ps. Flash with Siyah Kernel for battery craziness! ! !
Sent from My Samsung Galaxy S3 using XDA premium
nicholas1520 said:
If you flash your phone with a custom ROM for instance Resurrection Remix or Cyanogenmod you'd not directly be able to restore a stock ROM.
You will have to find one http://androidfirmwares.net that's for your region and flash it through Odin. Then you'll be able to update OTA and KIES.
Sent from my GT-I9300 using Tapatalk 2
Click to expand...
Click to collapse
You mean restoring from a nandroid? Because I was able to restore ICS whilst using JB - I did it multiple times.
S1N1ST3R said:
You mean restoring from a nandroid? Because I was able to restore ICS whilst using JB - I did it multiple times.
Click to expand...
Click to collapse
Agree the advise given was plain wrong .
Nandroid restore a backed up stock rom yes yes yes .
The only but is that the backed up rom is of course rooted .
jje
JJEgan said:
Agree the advise given was plain wrong .
Nandroid restore a backed up stock rom yes yes yes .
The only but is that the backed up rom is of course rooted .
jje
Click to expand...
Click to collapse
Okay... now I'm even more confused
Let me see if I get this right?
One way to do it would be to:
1) Download tools and rom (odin, CM and drivers etc)
2) Flash new cool rom
3) Donwload original samsung rom
4) Flash old boring rom back to phone
5) Use tool to reset counter (optional)
Now, my phone would like as if I had never ever rooted and flashed my rom
Is that more or less correct?
hjalte81 said:
Hi guys...
I have a galaxy s3 and up to this point I've been pretty satisfied with the original firmware...
However, I'd like to try out some of custom made ones, but since there's a big update on the way, I want to be safe doing so...
What I mean is basically this:
Can I somehow backup my stock firmware, try out some custom builds and then get the OTA update when it's available?
I don't really care about guarantee, but I'd really like the option to get OTA updates from samsung in the future (if I for some reason want to do so).
I remember an old post, where someone talk about this, but I can't find it
Please help me
Click to expand...
Click to collapse
When you want to get back to stock firmware follow these steps
1.Download stock firmware for your region from
Www.Samsung-updates.com
2. Download triangle away from xda forum to reset your flash counter from
http://forum.xda-developers.com/showthread.php?t=1494114
3. Also download mobile Odin from xda forum from http://forum.xda-developers.com/showpost.php?p=22234918&postcount=7
4. Step by step guidance is available at
http://galaxys3root.com/galaxy-s3-unroot/how-to-unroot-galaxy-s3-i9300/
Sent from my GT-I9300 using xda premium

Can I install CWM without flashing new ROM or kernel?

As I mentioned in my other thread, I have a second hand US SGP 5.0. I really want to try some other ROMs but I want to create an image of my current setup just in case something happens. I've read that CWM can make full Nandroid backups so is there a way I can install CWM without flashing to a new ROM to make the backup of my current setup? I only see threads for new ROMs that include CWM but not a thread just for CWM.
Alternatively, if anyone can suggest a way to make a full image of my current setup without the need to flash anything, that would work as well.
Thanks!
CWM is included in custom kernels. just make sure to flash the CORRECT kernel with odin and u shall be fine
So just to clarify I can flash a custom kernel without flashing a new ROM?
Can I still hang onto the hope of being able to just install CWM without flashing anything? I would really prefer to make a full Nandroid backup of my current working setup before exploring new ROMs.
Thanks!
Yes you can flash just a kernel with odin. There is a way to install cmw without a custom rom or kernel but the galaxy player is a rather shunned device so sadly not for us.
I'd recommend flashing terrasilent, and if anything goes wrong theres stocks on this forum you can flash back to.
Sent from my YP-G1 using xda app-developers app
PairOfSocks said:
Yes you can flash just a kernel with odin. There is a way to install cmw without a custom rom or kernel but the galaxy player is a rather shunned device so sadly not for us.
I'd recommend flashing terrasilent, and if anything goes wrong theres stocks on this forum you can flash back to.
Sent from my YP-G1 using xda app-developers app
Click to expand...
Click to collapse
He have a 5.0 so depending from his device region, he would have to flash either rj's or entropy daily driver.

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