Precautions to take before rooting/Custom Roms - Galaxy S III Q&A, Help & Troubleshooting

I rooted my Galaxy Note 2 and used an app from the app market for backing up the EFS, the app crashed in the middle and I ended up losing the EFS. Nothing worked and I had to take it to the service centre (thankfully I could remove the flash counter and make the status to official so they did it within warranty.)
I have exchanged the phone with my sibling, I have the s3 now. The battery life on the official UK 4.3 version (since it wasn't out for India yet) sucks(any. I would like to try custom Roms.
Kindly link me to any existing thread(I Couldn't find one) if its there.
What all precautions should I take?
1)Backup the stock ROM(using Titanium Backup?)
2)Backup EFS(using?)
Thanks in advance

raddums said:
I rooted my Galaxy Note 2 and used an app from the app market for backing up the EFS, the app crashed in the middle and I ended up losing the EFS. Nothing worked and I had to take it to the service centre (thankfully I could remove the flash counter and make the status to official so they did it within warranty.)
I have exchanged the phone with my sibling, I have the s3 now. The battery life on the official UK 4.3 version (since it wasn't out for India yet) sucks(any. I would like to try custom Roms.
Kindly link me to any existing thread(I Couldn't find one) if its there.
What all precautions should I take?
1)Backup the stock ROM(using Titanium Backup?)
2)Backup EFS(using?)
Thanks in advance
Click to expand...
Click to collapse
you can use the hc-KTool to backup the efs, is easy to use and free downloads from the play store. backup the stock rom is a custom recovery such as CWM, Philz, TWRP.

mojonx0droid said:
you can use the hc-KTool to backup the efs, is easy to use and free downloads from the play store. backup the stock rom is a custom recovery such as CWM, Philz, TWRP.
Click to expand...
Click to collapse
Thank you!
Any other precaution I should take?

raddums said:
Thank you!
Any other precaution I should take?
Click to expand...
Click to collapse
another precaution may be, install the correct kernel for rom you wear. clear that if you change custom kernel. but just these two precautions, especially with having the efs backup.

mojonx0droid said:
another precaution may be, install the correct kernel for rom you wear. clear that if you change custom kernel. but just these two precautions, especially with having the efs backup.
Click to expand...
Click to collapse
Is it safe to flash the official 4.1.2 India firmware via odin over 4.3 Uk version to downgrade?

raddums said:
Is it safe to flash the official 4.1.2 India firmware via odin over 4.3 Uk version to downgrade?
Click to expand...
Click to collapse
Sry editting. Just saw tat u can downgrade safely. Just rmb to backup ur efs folder nonetheless.
Sent from my SM-N9005.
Give a thank if I helped you

JellyYogurt said:
Sry editting. Just saw tat u can downgrade safely. Just rmb to backup ur efs folder nonetheless.
Sent from my SM-N9005.
Give a thank if I helped you
Click to expand...
Click to collapse
but EFS backup would require root? And the root method available is for 4.1.2
Rooting and Custom Roms were so much more fun on the sk17i

raddums said:
but EFS backup would require root? And the root method available is for 4.1.2
Rooting and Custom Roms were so much more fun on the sk17i
Click to expand...
Click to collapse
U can root 4.3
Sent from my SM-N9005.
Give a thank if I helped you

JellyYogurt said:
U can root 4.3
Sent from my SM-N9005.
Give a thank if I helped you
Click to expand...
Click to collapse
Thanks.. I hope everything goes well

Related

[Q] Just rooted..HELP!

Hello i just rooted my sgs3 unlocked through this guide here:
http://hdtechvideo.com/community/in...m-recovery-in-samsung-galaxy-s3-gt-i9300.259/
How can i make backup from my phone exactly the way it is now ? I want to flash the CM10 nightly ROM and if i regret and want to unistall it how can i restore from the backup? I already downloaded the ROM.I know im a noob.
Oh and btw if i unistall the CM10 and restore from backup can i unroot my phone and get my warranty back?
anyone?? Please
to the backup and restore you can use TITANIUM BACKUP
and you can to unroot your phone and you will get your warranty back (I'LL SEARCH FOR UNROOTED RIGHT NOW)
UNROOT tutelary http://forum.xda-developers.com/showthread.php?t=1710613
patriotaki said:
anyone?? Please
Click to expand...
Click to collapse
People who bump get banned .
Read the INDEX you need a Nandroid backup via CWM recovery plus an EFS folder backup .
http://forum.xda-developers.com/showthread.php?t=1927113
jje
IceCreamBoris said:
to the backup and restore you can use TITANIUM BACKUP
and you can to unroot your phone and you will get your warranty back (I'LL SEARCH FOR UNROOTED RIGHT NOW)
UNROOT tutelary http://forum.xda-developers.com/showthread.php?t=1710613
Click to expand...
Click to collapse
does the tut for unroot with triangle away work?
IceCreamBoris said:
to the backup and restore you can use TITANIUM BACKUP
and you can to unroot your phone and you will get your warranty back (I'LL SEARCH FOR UNROOTED RIGHT NOW)
UNROOT tutelary http://forum.xda-developers.com/showthread.php?t=1710613
Click to expand...
Click to collapse
my phone stuck on CM animation it just looping around what to do
patriotaki said:
my phone stuck on CM animation it just looping around what to do
Click to expand...
Click to collapse
i think that bootloop
use the odin to burn back the stock rom
Ask in the CM Q&A thread .
If that fails flash stock rom .
jje
good news it just booted! google now is fantastic!
Use the search facility in future the answers to most questions are already there.

[Q] Uninstall mod

hi i recently installed this mod http://forum.xda-developers.com/showthread.php?t=2429923 but i dont want it anymore, unfortunately the modder do not post a uninstaller.
can i just flash any other rom or need to do a special wipe or format in the system or data files in CWM?
Masterchivo said:
hi i recently installed this mod http://forum.xda-developers.com/showthread.php?t=2429923 but i dont want it anymore, unfortunately the modder do not post a uninstaller.
can i just flash any other rom or need to do a special wipe or format in the system or data files in CWM?
Click to expand...
Click to collapse
Just restore back your nandroid backup using cwm
Sent from my beloved GT-I8552
emeemisri said:
Just restore back your nandroid backup using cwm
Sent from my beloved GT-I8552
Click to expand...
Click to collapse
im sorry i not sure of what is nandroid
I have a backup of the rom i was using before flashing the mod. Thats the backup i need to restore?
Masterchivo said:
im sorry i not sure of what is nandroid
I have a backup of the rom i was using before flashing the mod. Thats the backup i need to restore?
Click to expand...
Click to collapse
Yes
Sent from my beloved GT-I8552
emeemisri said:
Yes
Sent from my beloved GT-I8552
Click to expand...
Click to collapse
ok man i will restore
Thanks for the help :good:
Did not take nay backup for ROM or nadroid
i tried rooting my phone using ODIN and i want to unroot it now as when ever i try to update my device it says "your device has been modified.software updates are not available.
Did not take nay backup for ROM or nandroid .Guys am breaking my head on how to rollback my original software .some one please help me
srikanthkilaru said:
i tried rooting my phone using ODIN and i want to unroot it now as when ever i try to update my device it says "your device has been modified.software updates are not available.
Did not take nay backup for ROM or nandroid .Guys am breaking my head on how to rollback my original software .some one please help me
Click to expand...
Click to collapse
Just flash latest official firmware from Samsung and then u will be able to update ur device!!! Use Odin to flash!!!

I am not able to root my i9300 on stock ROM 4.3

Hello,
I bought my SGS3 more than a year ago. It came with 4.0.4 (ICS), I inmediately changed the ROM to have a pure Samsung one (I live in Mexico, so I wanted to get rid of the TELCEL ROM). After some months I changed the ROM to Jelly 4.1.2 and I kept the phone with it.
I always have rooted my phone without any issues, in order to be able to make backups with "titanium backup" app, so everytime I change the ROM....I do first a backup and then I flashed, so I have to be able to root the phone in the next ROM.
I read about the 4.3 release in October 2012, but after a week I read that too many issues were going on.....so I decided to wait.
So finally, I saw XXUGMK6 from "samsung-updates.com" page and I downloaded it.
I researched a little bit about the official ROM and the version XXUGMK7 was released then, so I decided to change it with this version.
Once I flashed the phone with this ROM everything looked fine, so I proceed to "root" it using ChainFire procedure (CF-Auto-root), but I have not been able to do it!!
I already read a lot of threads looking for solutions, I followed the indications..........but it is not rooted.
I got the right Odin Version, the right ZIP for rooting (CF-Auto-Root-m0-m0xx-gti9300.zip)........followed the OP by ChainFire.....but it does not work.
So.....I humbly ask for help, I really do not want to go back on 4.1.2 because not been succesfull in rooting.
Regards,
Guile
Install recovery. Flash supersu.zip in there.
Sent from my GT-I9300 using Tapatalk
hierarchy666 said:
Install recovery. Flash supersu.zip in there.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
Thanks!
I already have the "recovery" in place, but where can I get "supersu.zip" file. I've just seen the one in googleplay, not sure if it is in ChainFire page?
Regards,
Guile
Step. 1 Get a good recovery
PhilZ Touch is a CWM Advanced Edition
Step. 2 Backup EFS.
Step. 3 Flash SuperSU
For fully stock prerooted deodexed latest rom.
http://forum.xda-developers.com/showthread.php?t=2601794
Flash that rom if you still got problems with root.
hierarchy666 said:
Supersu cwm flash
http://download.chainfire.eu/supersu
http://forum.xda-developers.com/showthread.php?t=2002953
For recovery i suggest philz and please backup your efs its important.
For fully stock prerooted deodexed latest rom
http://forum.xda-developers.com/showthread.php?t=2601794
Flash that rom if you still got problems with root.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
Thank you very much hierarchy666 , it worked flashing the Supersu.zip..........I did it with the recovery I have. Now my phone is rooted and I could recover all my stuff from the backup.
Regards,
Guile
Glad to hear that.
Sent from my GT-I9300 using Tapatalk
hierarchy666 said:
Supersu cwm flash
http://download.chainfire.eu/supersu
http://forum.xda-developers.com/showthread.php?t=2002953
For recovery i suggest philz and please backup your efs its important.
For fully stock prerooted deodexed latest rom
http://forum.xda-developers.com/showthread.php?t=2601794
Flash that rom if you still got problems with root.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
thx dude..your the best

Indian firmware over German

Guyzz need help...
I have a s3 with german firmware...check screenshots...
so my problem is can i flash indian firmware 4.3 directly on german 4.1.2 via odin or i have to do anything extra...
plz reply me ASAP!
Thanx....
Ashish924 said:
Guyzz need help...
I have a s3 with german firmware...check screenshots...
so my problem is can i flash indian firmware 4.3 directly on german 4.1.2 via odin or i have to do anything extra...
plz reply me ASAP!
Thanx....
Click to expand...
Click to collapse
If you got the I9300 model with no sim lock- no problem.
Ps- notice that if your current build is below EMG4, than your file partition will be changed to EFSv2,
needs to be noticed if you'll try to go back to 4.1.2 afterwards
amirTor said:
If you got the I9300 model with no sim lock- no problem.
Ps- notice that if your current build is below EMG4, than your file partition will be changed to EFSv2,
needs to be noticed if you'll try to go back to 4.1.2 afterwards
Click to expand...
Click to collapse
I think he can go back after flashing 4.3 ROM. I have done that.
Aashish, you can install any ROM as per your requirement if SIM is not locked with any SP.
But there is a chances of loosing IMEI. So please take backup. Search and download MG4 modem handy.
KSKHH said:
I think he can go back after flashing 4.3 ROM. I have done that.
Aashish, you can install any ROM as per your requirement if SIM is not locked with any SP.
But there is a chances of loosing IMEI. So please take backup. Search and download MG4 modem handy.
Click to expand...
Click to collapse
Sorry for noob quesn but what is SP and MG4 modem handy??
KSKHH said:
I think he can go back after flashing 4.3 ROM. I have done that.
Aashish, you can install any ROM as per your requirement if SIM is not locked with any SP.
But there is a chances of loosing IMEI. So please take backup. Search and download MG4 modem handy.
Click to expand...
Click to collapse
Yeah what you propose seems very straightforward BUT it would be advisable to do a full backup INCLUDING EFS, just check the EFS box in TWRP for instance, as it's not usually included in a backup by default.
pjcarrmole said:
Yeah what you propose seems very straightforward BUT it would be advisable to do a full backup INCLUDING EFS, just check the EFS box in TWRP for instance, as it's not usually included in a backup by default.
Click to expand...
Click to collapse
hey...i dont wanna void official status...i.e i dont want to install any custom recovery...i want everything to stay official
Ashish924 said:
hey...i dont wanna void official status...i.e i dont want to install any custom recovery...i want everything to stay official
Click to expand...
Click to collapse
Ah I get it now, in which case I would be tempted to go to an Indian 4.1.2 firmware through ODIN and the update through OTA if that's possible. That would reduce the chase of stuffing up your EFS by using an official Samsung update procedure.

Downgrade Marshmallow to Lollipop

Hey Guys.
Once i tried to downgrade my Galaxy S6 Edge SM-G925F from Marshmallow to Lollipop with odin, but it failed and i had a brick. I tried different Versions of Odin and with much luck i fixed my Phone. But now i am insecure and hope to get help from you. I installed latest Smart Switch Version. What do i have to do to downgrade without bricking my Device?
Sconny said:
Hey Guys.
Once i tried to downgrade my Galaxy S6 Edge SM-G925F from Marshmallow to Lollipop with odin, but it failed and i had a brick. I tried different Versions of Odin and with much luck i fixed my Phone. But now i am insecure and hope to get help from you. I installed latest Smart Switch Version. What do i have to do to downgrade without bricking my Device?
Click to expand...
Click to collapse
Its not possible to downgrade sorry.
callumbr1 said:
Its not possible to downgrade sorry.
Click to expand...
Click to collapse
Oh.. But if i root and Flash twrp on My device, is it possible to flash a 5.1.1 Based Rom without any risk of Brick?
Nope
Sconny said:
Oh.. But if i root and Flash twrp on My device, is it possible to flash a 5.1.1 Based Rom without any risk of Brick?
Click to expand...
Click to collapse
Still not possible. Your stuck on MM unfortunately
callumbr1 said:
Still not possible. Your stuck on MM unfortunately
Click to expand...
Click to collapse
Too bad it does not work, but thanks for your help!
Sconny said:
Too bad it does not work, but thanks for your help!
Click to expand...
Click to collapse
No problem
Sconny said:
Hey Guys.
Once i tried to downgrade my Galaxy S6 Edge SM-G925F from Marshmallow to Lollipop with odin, but it failed and i had a brick. I tried different Versions of Odin and with much luck i fixed my Phone. But now i am insecure and hope to get help from you. I installed latest Smart Switch Version. What do i have to do to downgrade without bricking my Device?
Click to expand...
Click to collapse
Only possible when flashing 5.1.1 custom rom via recovery, but you will lose your imei, BUT you can backup your imei and after flashing new rom restore it.
RubbaBand said:
Only possible when flashing 5.1.1 custom rom via recovery, but you will lose your imei, BUT you can backup your imei and after flashing new rom restore it.
Click to expand...
Click to collapse
Is There an Option to restore imei
Sconny said:
Is There an Option to restore imei
Click to expand...
Click to collapse
Yes before you proceed you will need to install a "custom recovery" (Search about it if you dont know what it is)
Go to recovery like you want to format but instead go to "Backup & Restore" and select backup and then select "efs" which is IMEI.
After flashing a custom rom and after the first boot you will notice that there is no signal, so go to recovery and select to restore efs.
I recommend you to backup efs to ext sd card.
This will void your warranty, even downgrading it self will void it.
Goodluck!
callumbr1 said:
Still not possible. Your stuck on MM unfortunately
Click to expand...
Click to collapse
RubbaBand said:
Yes before you proceed you will need to install a "custom recovery" (Search about it if you dont know what it is)
Go to recovery like you want to format but instead go to "Backup & Restore" and select backup and then select "efs" which is IMEI.
After flashing a custom rom and after the first boot you will notice that there is no signal, so go to recovery and select to restore efs.
I recommend you to backup efs to ext sd card.
This will void your warranty, even downgrading it self will void it.
Goodluck!
Click to expand...
Click to collapse
Okay good to know. Thanks
hm i don´t know why i could downgrade from the first OTA release of MM back to LP??
i used MM for 3 days and then i flashed back to 5.1.1 without any trouble?!?
used Odin and Stock 5.1.1 fw
poci44 said:
hm i don´t know why i could downgrade from the first OTA release of MM back to LP??
i used MM for 3 days and then i flashed back to 5.1.1 without any trouble?!?
used Odin and Stock 5.1.1 fw
Click to expand...
Click to collapse
Any firmware 4DPG1 or above can not be downgraded. Im guessing before you was on U3DPAD or lower which can be downgraded. The first MM builds could be downgraded. But any 4xxxx can not
ah ok....
then i downgraded fast enough
my main reason of downgrade:
in MM it is not possible to change the font with HiFont App....!!!
i see other people saying that it's possible.
but i have one of the latest builds so, in your opinion , it is impossible for me to downgrade.
but are you sure? i can't believe that, i want absolutely a solution, i am searching it from so many time, please help
cescof said:
i see other people saying that it's possible.
but i have one of the latest builds so, in your opinion , it is impossible for me to downgrade.
but are you sure? i can't believe that, i want absolutely a solution, i am searching it from so many time, please help
Click to expand...
Click to collapse
What build number are you in? It is impossible to downgrade from a late build 4xxxx. I have tried absolutely everything. The only way is to flash a nandroid backup but even then you will lose imei. You can always back up efs and restore but its not always as straight forward to restore it. You would also need to flash a new bootloader and modem.
Did you make a nandroid backup of your previous firmware? If not then you cant try that.
The only other way you can try is to flash a 5.1.1 custom rom. Again you will lose imei. So efs backup is important. You would also need to flash BL and modem again.
There are roms based on lollipop which is a much safer way to revert back, try one of them.
Overall i wouldnt try it bit its up to you. If you do and you find a way to do it let me know.
callumbr1 said:
What build number are you in? It is impossible to downgrade from a late build 4xxxx. I have tried absolutely everything. The only way is to flash a nandroid backup but even then you will lose imei. You can always back up efs and restore but its not always as straight forward to restore it. You would also need to flash a new bootloader and modem.
Did you make a nandroid backup of your previous firmware? If not then you cant try that.
The only other way you can try is to flash a 5.1.1 custom rom. Again you will lose imei. So efs backup is important. You would also need to flash BL and modem again.
There are roms based on lollipop which is a much safer way to revert back, try one of them.
Overall i wouldnt try it bit its up to you. If you do and you find a way to do it let me know.
Click to expand...
Click to collapse
I did all yoy suggested, but nothing to do, phone stucks at samsung galaxy logo...
cescof said:
I did all yoy suggested, but nothing to do, phone stucks at samsung galaxy logo...
Click to expand...
Click to collapse
You cant downgrade after 4xxxx firmware mate. After updated bootloader your stuck on mm.
There are ROMs based on 5.1.1. But because you flashed 4xxxx firmware you cant downgrade. All lollipop firmwares are 3xxxx
callumbr1 said:
You cant downgrade after 4xxxx firmware mate. After updated bootloader your stuck on mm.
There are ROMs based on 5.1.1. But because you flashed 4xxxx firmware you cant downgrade. All lollipop firmwares are 3xxxx
Click to expand...
Click to collapse
You said there was 2 ways to do this downgrade, i did them, but they didn't work
cescof said:
You said there was 2 ways to do this downgrade, i did them, but they didn't work
Click to expand...
Click to collapse
I said the second way was to try to flash a 5.1.1 custom rom. But you would lose imei and theres no guarantee it would work. Its been reported that once you upgrade to 4xxxx firmware its impossible to downgrade

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