Fix a bootloop problem after trying to unroot. - Galaxy S II Q&A, Help & Troubleshooting

Please help, after I rooted my Galaxy S2 (international version) with a CyanogenMod 9 Resurrection 4.0.4 ICS, I wanted to unroot it back to official 4.0.3. I've already read a few threads and have done some of them but nothing seems to work.
ps, i used odin's option PDA to root my phone, and according to the threads i just read to unroot it i have to download an official rom and use the PDA option to unroot my device. But all it did is to bootloop my phone. help please, im new at this.

cabbie1 said:
Please help, after I rooted my Galaxy S2 (international version) with a CyanogenMod 9 Resurrection 4.0.4 ICS, I wanted to unroot it back to official 4.0.3. I've already read a few threads and have done some of them but nothing seems to work.
ps, i used odin's option PDA to root my phone, and according to the threads i just read to unroot it i have to download an official rom and use the PDA option to unroot my device. But all it did is to bootloop my phone. help please, im new at this.
Click to expand...
Click to collapse
What you need to do is to first reboot into recovery, format /system partition, THEN flash the stock rom by Odin...... hope I helped
Sent from my GT-I9100 using xda app-developers app

This happened to me
I had the same problem when I first unrooted. Go into stock recovery after flashing the official ROM and do a factory reset.

Related

Debrand and Root help

Hi,
Sorry if this has been posted before i am a bit of noob on android.
I have got myself Galaxy S3 locked to Three network i have looked all over the forums but managed to confuse myself
I want to debrand and root my phone but i don't know what to do first do i root before flashing stock to the phone or flash with stock first then root.I really don't want to brick it lol.
I would like to open it for all networks also.
P.S Im in UK model number GT-I9300
Thank you
Steveo
First u have to flash the debranded firmware you want with Odin theN do a cf root then after u have rooted you can go to play store and download voodoo galaxy s III sim unlock
If I helped say thanks
Hi
Thanks for the quick reply.
So do i just flash the stock rom for the uk straight to my phone using odin3 v1.85?
will it wipe everything from my phone once i do this contacts etc..
Stock rom does not wipe .
Root will be wiped if you flash stock rom after root so in your case stock followed by root .
jje
Thanks for the help guys.
I managed to get their in the end.
what did you do in the end ? I want to do the same and remove the Vodafone branded firmware off my S3 and just add stock firmware on..
Cheers
Go to samfirmware.com and flash your Rom of choice through Odin.
Sent from my GT-I9300 using xda premium

[Q] Unroot Phone from Backup

Greetings All,
I rooted my phone a few months ago with the help of GalaxyS2Root on YouTube. As soon as I rooted it, I made a backup. I flashed the SuperNexus ROM and now the Resurrection Remix ROM.
I have attempted to restore the original backup I made prior to flashing the phone to the above ROMs and it succeeded (after altering the md5 file). I noticed that there's still the yellow triangle at the boot sequence which states that the phone is still rooted. How do I unroot a backup? Do I have to download an official ICS ROM or can I simply flash a file through Odin?
Some Details:
- Purchased Samsung Galaxy S2 in the Philippines UNLOCKED (i9100)
I apologize for the newbie questions.
Awaiting for your replies
Are you going to unroot? Well, you can unroot a backup. If you are going to unroot, use triangle away then flash an offical rom.
Sent from my potato running potatomod.
preseodymium said:
Are you going to unroot? Well, you can unroot a backup. If you are going to unroot, use triangle away then flash an offical rom.
Sent from my potato running potatomod.
Click to expand...
Click to collapse
What do you mean by FLASH an official ROM? Through Odin? Are you talking about the ICS Official ROMS floating around? Wouldn't that wipe all my data?
josefarrugia said:
What do you mean by FLASH an official ROM? Through Odin? Are you talking about the ICS Official ROMS floating around? Wouldn't that wipe all my data?
Click to expand...
Click to collapse
yes it will wipe all your data

root s3

hi there guys i am really new to all this rooting, i rooted my phone on the verison 4.1.1 and i know for my network the 4.1.2 has come out but it wont let me update it to that, is there anyway i can update it to 4.1.2 and keeping root
Cheers
Go to SamMobile and download the latest firmware for your network and flash it
yes there is. Go as decribed to http://www.sammobile.com/firmware/ and look for i9300 with ur network. Then flash via Odin. Keep in mind u will loose ur root and u will have to repeat the rooting process... at least if u want to gain root again,
cheers
If you have the app, you can use mobile odin and flash the firmware with it, you will keep root.
Sent from my GT-I9300 using xda app-developers app
thank you guys,
what if i want to update to another rom but has the version 4.1.2, would i first have to update my rooted s3 to 4.1.2 then root it then put the 4.1.2 rom e.g wanamlite 4.1.2 or can i just install the rom from clockwork recovery ??
usyda1 said:
thank you guys,
what if i want to update to another rom but has the version 4.1.2, would i first have to update my rooted s3 to 4.1.2 then root it then put the 4.1.2 rom e.g wanamlite 4.1.2 or can i just install the rom from clockwork recovery ??
Click to expand...
Click to collapse
If you have a rooted device, you can directly go from 4.1.1 to (any 4.1.2) custom rom. You may have to wipe your device, follow the instructions in the specific ROM thread.
If you are a newbie to rooting / flashing spend more time in reading + choose correct rom for your S3 or else your phone would turn out-to-be a costly paper weight!
ysrini said:
If you have a rooted device, you can directly go from 4.1.1 to (any 4.1.2) custom rom. You may have to wipe your device, follow the instructions in the specific ROM thread.
If you are a newbie to rooting / flashing spend more time in reading + choose correct rom for your S3 or else your phone would turn out-to-be a costly paper weight!
Click to expand...
Click to collapse
Thank you very much exactally what i needed to know

is it safe?

hi XDA! just want to ask is it safe to update if your rooted s3 via kies? will it be unroot your device? or does it affect it in such way? thanks more power!
Sv: is it safe?
silvercold said:
hi XDA! just want to ask is it safe to update if your rooted s3 via kies? will it be unroot your device? or does it affect it in such way? thanks more power!
Click to expand...
Click to collapse
You can't update any rooted / superuser modified phones thru Kies.
Sent from my GT-I9300 using xda app-developers app
Destroyedbeauty said:
You can't update any rooted / superuser modified phones thru Kies.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
As long as the ROM & CSC are correct you can update a rooted phone through Kies, as far as I am not wrong, whereas you will loose root and have to re-root. What is not working is the OTA update if you are rooted.
Hence the easiest solution is to download the ROM via sammobile or XDA and flash it via Odin or better Mobile Odin (to keep root).
Sv: is it safe?
chrismast said:
As long as the ROM & CSC are correct you can update a rooted phone through Kies, as far as I am not wrong, whereas you will loose root and have to re-root. What is not working is the OTA update if you are rooted.
Hence the easiest solution is to download the ROM via sammobile or XDA and flash it via Odin or better Mobile Odin (to keep root).
Click to expand...
Click to collapse
No, you can't. I've tried myself and it doesn't work.
Sent from my GT-I9300 using xda app-developers app
Yes, you can update a rooted phone through Kies as long as the csc is correct. You will lose root though, but other than that it's safe.
thanks guys for immediate response.I think i will just use odin to maintained rooted. my only problem is i am not sure what guide to use and which is safer? although i research myself through i am just confused so many guides in using odin. my phone is GT - I9300 android version 4.1.1 with a baseband ver: i9300XXDLIB. i just want to update this to 4.1.2 if possible via odin to maintain rooted. If you guys can help me out which guide to follow that will maintain rooted and safe that will be much appreciated!
thanks a lot!
silvercold said:
thanks guys for immediate response.I think i will just use odin to maintained rooted. my only problem is i am not sure what guide to use and which is safer? although i research myself through i am just confused so many guides in using odin. my phone is GT - I9300 android version 4.1.1 with a baseband ver: i9300XXDLIB. i just want to update this to 4.1.2 if possible via odin to maintain rooted. If you guys can help me out which guide to follow that will maintain rooted and safe that will be much appreciated!
thanks a lot!
Click to expand...
Click to collapse
As I mentioned, Mobile Odin is the easiest way as you just select the rom and it flashes incl. root injection. For Odin, simply download the rom you would like to flash (e.g. stock rom from sammobile or prerooted from XDA's general section), and follow the usual steps (e.g. there are easy videos to follow on YouTube & there are many guides in the general section). If you chose to flash a rom that is not yet rooted you will need to flash CF-Auto-Root of CF-Root again.
chrismast said:
As I mentioned, Mobile Odin is the easiest way as you just select the rom and it flashes incl. root injection. For Odin, simply download the rom you would like to flash (e.g. stock rom from sammobile or prerooted from XDA's general section), and follow the usual steps (e.g. there are easy videos to follow on YouTube & there are many guides in the general section). If you chose to flash a rom that is not yet rooted you will need to flash CF-Auto-Root of CF-Root again.
Click to expand...
Click to collapse
got it! another question if you don't mind, can i use stock rom using odin without unrooting my device? some people say that if you try to flash your device with official stock rom might unroot phone? is this true or just using odin will prevent your phone from unrooting? no matter what rom you would use. thanks in advance!
silvercold said:
got it! another question if you don't mind, can i use stock rom using odin without unrooting my device? some people say that if you try to flash your device with official stock rom might unroot phone? is this true or just using odin will prevent your phone from unrooting? no matter what rom you would use. thanks in advance!
Click to expand...
Click to collapse
there are two ways:
(1) Odin (desktop version): if you flash a stock rom (normal version, not rooted), it will be not rooted, hence you have to root again
(2) Mobile Odin (Adroid Play Store): if you flash a stock rom (normal version, not rooted), you have an option to inject root and directly root it in the process of flashing the rom
Sent from my GT-I9300 using xda app-developers app
I see, the mobile odin i guess is suited for me. since i dont want to unroot my device i just want to update it.
you can always reroot it afterwards. Or better yet, flash a prerooted ROM

[Q] how to unroot my s3

Please can anyone help me?
I need to unroot my s3 and put a UK T-Mobile ROM back on it as I am exchanging it for a new one through insurance due to dropping the phone.
The screen still works but has a small crack in it.
Cheers in advance
Go into the general section and follow the unroot guide.
Basically you need to reset flash counter by downloading TriangleAway app (its available here on xda) then just download your official rom from http://www.sammobile.com/firmwares/1/?model=GT-I9300#firmware, flash it through odin and restore factory settings. There should be in deph tutorial in general section.
Flash official rom with odin
Cheers guys all sorted now
remondt said:
Flash official rom with odin
Click to expand...
Click to collapse
Do it

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