Efs 2? - Galaxy S III Q&A, Help & Troubleshooting

Hey xda,
A few days ago I saw a thread go by about efs. I need to fix a galaxy s3 and the only thing I can use right now is my own phone and the search funxtion is buggy..
Can anyone elaborate on efs v2 and what it is? I believe the phone was running 4.1.2 or 4.2.2 before and I need to restore a nandroid. Will this cause problems?
Also it is running a custom kernel. Will stock kernel be installed once I restore the nandroid? Any information regarding efs v2 is very welcome.
Sent from my HTC One X using xda app-developers app

Stefan0vic said:
Hey xda,
A few days ago I saw a thread go by about efs. I need to fix a galaxy s3 and the only thing I can use right now is my own phone and the search funxtion is buggy..
Can anyone elaborate on efs v2 and what it is? I believe the phone was running 4.1.2 or 4.2.2 before and I need to restore a nandroid. Will this cause problems?
Also it is running a custom kernel. Will stock kernel be installed once I restore the nandroid? Any information regarding efs v2 is very welcome.
Sent from my HTC One X using xda app-developers app
Click to expand...
Click to collapse
No need to make a new thread. All details you need to know are mentioned in various efs threads. Like this one http://forum.xda-developers.com/showthread.php?t=2393289
I dont know about restoring nandroid but in my experience flashing a 4.1.2 rom on a 4.3 rom caused me ALOT of trouble. Might be due to a change in modem in the process, even flashing an older 4.1.2 or 4.2.2 nandroid did NOT fix my problem. So i dont recommend you do that.

So if I understand right than I can only safely flash 4.3 and up? Thanks for the link!
Sent from my HTC One X using xda app-developers app

Stefan0vic said:
So if I understand right than I can only safely flash 4.3 and up? Thanks for the link!
Sent from my HTC One X using xda app-developers app
Click to expand...
Click to collapse
Its not impossible to flash back down, there are certain procedures to backup and restore the efs but its better to avoid the trouble. No need to write thanks, just click the thanks button

Related

Installing a new rom

Hi sorry in advance if this kind of question comes up alot but imk looking to install a new rom onto my s3 how easy is it to do it? i already have a rom installed (darkys) is it a simple matter of finding a tutorial and just over wiping the curent rom with the new one? or do i have to go back to facotry settings and start from fresh?
Generally follow instructions on your chosen Rom thread
Sent from my GT-I9300 using xda premium
Most are just wipe cache and flash over existing rom .
But easy peasy problem solver is to have a current Nandroid backup to restore if needed .
jje
does anyone know if the cynagen mod is released for the s3 i9300??
Seany_Blitz said:
does anyone know if the cynagen mod is released for the s3 i9300??
Click to expand...
Click to collapse
cm10 and cm9, a quick look in development would have told you this
Sent from my GT-I9300 using xda premium

Reflashing rom

hi, i have a noob question, i dont know so much about repartitioning and other things, my question is, when upgrading a rom it does at normal procces (wipe data and install zip) . im taljking about for example ,i'm now in shostock 3 , it is android 4.1 and if i would back to cm9 , could i do that?. i have a nandroid backup of cm9, can i just restore this backup and i wont have problems without matter the rom i'm coming?, sorry for my english and thanks for the understanding.:good:
I'm not familiar with CM9, but the only issue would be if the ClockworkMod Recovery in the SHOstock3 kernel is compatible with the backup made with thebackup made with CM9. I'm thinking it might not be because the Jebo kernel in SHOstock3 backs up a pre-load partition.
Do You think then that is better flash again cm9 instead of the backup?
Sent from my SGH-I777 using xda app-developers app
Eduardo9309 said:
Do You think then that is better flash again cm9 instead of the backup?
Sent from my SGH-I777 using xda app-developers app
Click to expand...
Click to collapse
Doesn't matter if it doesn't work just flash fresh. Not gonna brick your phone or anything.

[Q] Help needed status bar dissabeared!

Hi,
I recently put Siyah s2 v6.0 -Rom to my S2 that has stock Jelly bean running in it.
Installed also rom toolbox pro and tried to change something in the status bar, now the statusbar is completely gone.... i think the rom toolbox did greate nandbackup but not sure about it and can't find it.....
Any help?
THX!
Reflash rom. Nand. Will be in cwm or twrp folder look in int sd for cwm bkup and ext sd for twrp bkup
Do you mean by that, that i just flash the rom again with odin?
Didn't work...
Yes. What Rom you on? 4.1.2 sammy rom?
andrewwright said:
Yes. What Rom you on? 4.1.2 sammy rom?
Click to expand...
Click to collapse
Yes it's on stock sammy newest jelly bean. Just installed rom access to the phone.
That app will continue to cause you problems.
Helluva username you got there
gastonw said:
That app will continue to cause you problems.
Helluva username you got there
Click to expand...
Click to collapse
But how do i fix this problem?
By avoiding that app.
Some guys reported similar issues as I recall.
You can check the dev's thread.
Sent from my GT-I9100 using xda app-developers app
gastonw said:
By avoiding that app.
Some guys reported similar issues as I recall.
You can check the dev's thread.
Sent from my GT-I9100 using xda app-developers app
Click to expand...
Click to collapse
Yes but i tried to reflash it but it didn't come back?
So now i try to get the status bar back...
You reflashed stock and the bar is not there anymore?
You're gonna have to wipe dalvik as well.

EFS Pro

Hi,
I've got an Galaxy GT-I9300 and recently I flashed some custom roms, with no problems. But at the last time, my IMEI has changed to a generic and I received the 'Emergency Only'. Fortunately I had a backup of my original efs folder, made by KTool. So I restored it using some tutorials from xda and other forums and my original IMEI is back.
But it's frequently losing signal, then the signal returns with 'emergency', then gets normal, then lose signal again and etc.
My question is, can I restore an efs.img or *.tar.gz made by KTool using the EFS Pro? So I could wipe the efs folder and restore the backup, clean...
I'm now with WanamLite XXUFME7.
Sorry for my bad english :/
Thank you all!
Sent from my GT-I9300 using xda app-developers app
Somebody?
Sent from my GT-I9300 using xda app-developers app
iAndroider said:
Hi,
I've got an Galaxy GT-I9300 and recently I flashed some custom roms, with no problems. But at the last time, my IMEI has changed to a generic and I received the 'Emergency Only'. Fortunately I had a backup of my original efs folder, made by KTool. So I restored it using some tutorials from xda and other forums and my original IMEI is back.
But it's frequently losing signal, then the signal returns with 'emergency', then gets normal, then lose signal again and etc.
My question is, can I restore an efs.img or *.tar.gz made by KTool using the EFS Pro? So I could wipe the efs folder and restore the backup, clean...
I'm now with WanamLite XXUFME7.
Sorry for my bad english :/
Thank you all!
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Where you before on MG4? Try to flash this modem again
iAndroider said:
Somebody?
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
ASK in the EFS Pro thread .
Basics read first.
http://forum.xda-developers.com/showthread.php?t=2344125
Critical you read the first two posts .
I was using the UBEMH2, Omega Rom 4.1.2. When I flashed the Wanam XXUFME7 (4.2.2) it broken IMEI and got 0049..
Now it seems good, I haven't noticed no one or very few conection losses.
One more question, my counter is 1 and I have a custom recovery + custom rom. When I used Triangle Away to reset counter, even with stock recovery, the counter didn't get 0.
What do I need to do?
Sent from my GT-I9300 using xda app-developers app
iAndroider said:
I was using the UBEMH2, Omega Rom 4.1.2. When I flashed the Wanam XXUFME7 (4.2.2) it broken IMEI and got 0049..
Now it seems good, I haven't noticed no one or very few conection losses.
One more question, my counter is 1 and I have a custom recovery + custom rom. When I used Triangle Away to reset counter, even with stock recovery, the counter didn't get 0.
What do I need to do?
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
AFAIK this will happen unless you are running both a stock kernel AND recovery.
And how do I know if I'm with a stock kernel? Or by using a custom rom, the kernel is automaticaly custom too?
Sent from my GT-I9300 using xda app-developers app
iAndroider said:
Hi,
I've got an Galaxy GT-I9300 and recently I flashed some custom roms, with no problems. But at the last time, my IMEI has changed to a generic and I received the 'Emergency Only'. Fortunately I had a backup of my original efs folder, made by KTool. So I restored it using some tutorials from xda and other forums and my original IMEI is back.
But it's frequently losing signal, then the signal returns with 'emergency', then gets normal, then lose signal again and etc.
My question is, can I restore an efs.img or *.tar.gz made by KTool using the EFS Pro? So I could wipe the efs folder and restore the backup, clean...
I'm now with WanamLite XXUFME7.
Sorry for my bad english :/
Thank you all!
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
I had the same problem a few days ago when i was flashing cm10. Just restore back to stock firmware, root it and back up efs folder. then try to flash any rom and just restore the efs back up you did with stock firmware. it should be fine. if it is not working still, try to flash mg4 modem.
Thanks for your explanation!
Since yesterday it seems be fine, no more connection losses or 'emergency calls'. Maybe it was caused by a problem with my carrier. I'll keep it this way and if the issue appear again, I do what you said.
Can somebody help me with my last question, please?
iAndroider said:
And how do I know if I'm with a stock kernel? Or by using a custom rom, the kernel is automaticaly custom too?
Click to expand...
Click to collapse
Sent from my GT-I9300 using xda app-developers app
Basics read first.
http://forum.xda-developers.com/showthread.php?t=2344125
Critical you read the first two posts .
Its all posted if you read.
Custom rom may or may not have a custom kernel . You have top read the custom roms description .
settings about phone will give kernel details

Android 4.2.2 to new rom

Hello.
I have the Unofficial 4.2.2 Samsung rom on my S3 so I want to install a custom rom the 4.3 cyanogen so this will change my IMEI or not?
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xewier said:
Hello.
I have the Unofficial 4.2.2 Samsung rom on my S3 so I want to install a custom rom the 4.3 cyanogen so this will change my IMEI or not?
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
The IMEI is your device's fingerprint number, flashing roms don't change it, unless the rom file is corrupted or some error happens during the flash, what is kind of rare.
You should be able to flash without problems, but don't forget to flash the correct rom version for your device, and to flash GAPPS after flashing the rom.
Hey
In addition I would strongly recommend to back up ur efs..
Sent from my Amazing Samsung Galaxy S III...!
How sad that some HIT & RUN people after posting their questions and get their answers quickly never hit that damn THANKS button.
Thank but I updated my 4.1 android to 4.2 and my IMEI changed to 0049...the generic imei
Sent from my GT-I9300 using xda app-developers app
xewier said:
Thank but I updated my 4.1 android to 4.2 and my IMEI changed to 0049...the generic imei
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
that's actually downgrading rather than upgrading. 4.1.2 builds are newer and use a new EFS format but the 4.2.2 builds are older and use older EFS format! so back up your EFS every time before you flash something as already mentioned above. if you face any problems refer to the link under my signature and post there for any queries.

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