A Friendly Reminder!
Always make a EFS backup before flashing custom rom!
Go to play store and get a EFS Backup app! Or use Nandroid backup in custom recovery!!!
If you haven't made any, do it now!
Otherwise... you will end up like me... my Grand 2 doesn't have any backup about EFS partition and now the IMEI is null and unknown baseband version... can't make phone calls and sending SMS. Now I had to replace my phone...
Advice: If you don't want to end up like me, make a backup now! Search on Google about this. Before this incident I don't know the importance of EFS.
Hope my 'experience' could help you guys prevent bricking your phone. Dats why I made this thread I know it is not too proper in General section but I MUST inform all my dear friends in xda
Every stock rom comes wtih efs when we flash with odin..
reffho said:
Every stock rom comes wtih efs when we flash with odin..
Click to expand...
Click to collapse
Flash stock rom via Odin doesn't recover the unique IMEI in EFS partition... Only backups can recover it
Related
Can someone help pleasei installed a costum modem and IMEI became 0000, i have a backup made with ktoll but its not restoring properly.
estevensv said:
Can someone help pleasei installed a costum modem and IMEI became 0000, i have a backup made with ktoll but its not restoring properly.
Click to expand...
Click to collapse
Flashed back the stock rom and the imei Restored you can close the theread
Try this, its the way to repair your modem. Worked for me. Next time, search before you post.
http://forum.xda-developers.com/showthread.php?t=2218428
Hello!
I want to change my ROM because TouchWizz UI sucks and my device is lagging... I like CM and I want to flash it on my S3. I want to install it via CM Installer, but I have some questions :
- Does CM have Gapps already installed?
- Should I backup the /EFS folder? And how?
- Give me a way to backup my Stock ROM, if my installation fails, I will go back to it. (A tutorial or smth...)
I know how to install CM via their installer, but I am worried about that EFS thing...and the backup also...
Thanks!
Hello
!!ALL QUESTIONS GO IN THE Q&A FORUM!! OR THEY MAY BE DELETED
Please use the red report button and ask a mod to move the post.
- Does CM have Gapps already installed?>>> NO
- Does CM have Gapps already installed?>>> Always please read the faqs and guides .
Give me a way to backup my Stock ROM, if my installation fails, I will go back to it. (A tutorial or smth...)
Read the faqs and guides before flashing anything EFS and other problems are user failing to read .
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
CM Installer
JJEgan said:
Hello
!!ALL QUESTIONS GO IN THE Q&A FORUM!! OR THEY MAY BE DELETED
Please use the red report button and ask a mod to move the post.
- Does CM have Gapps already installed?>>> NO
- Does CM have Gapps already installed?>>> Always please read the faqs and guides .
Give me a way to backup my Stock ROM, if my installation fails, I will go back to it. (A tutorial or smth...)
Read the faqs and guides before flashing anything EFS and other problems are user failing to read .
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
Click to expand...
Click to collapse
I tried to use the CM installer but it gave me an error, If i where you just flash it through CWM or TWRP its much easier (for me that is)
When i first flashed my I9300 (S3) i never backed up the EFS i just never felt the need but i had been flashing roms for around 2 years, but for a beginer it may be wise to back it up.
Also If you want to backup your stock rom you can create a nandroid backup or just backup your info and if it goes wrong then you can just flash it back to stock 4.3 through odon.
Hope this helped?
Let me know how it went.
Well... I need to backup my /EFS and my current stock ROM. Is there any way to do it without rooting or other complicated things? And also I need to know how to restore that backups if something goes wrong... I will install CM via CM installer as I said earlier.
Check this out.
IMAGINARY666 said:
Well... I need to backup my /EFS and my current stock ROM. Is there any way to do it without rooting or other complicated things? And also I need to know how to restore that backups if something goes wrong... I will install CM via CM installer as I said earlier.
Click to expand...
Click to collapse
Take a look at this it may help: http://forum.xda-developers.com/showthread.php?t=2213909
Orangevenom said:
Take a look at this it may help: http://forum.xda-developers.com/showthread.php?t=2213909
Click to expand...
Click to collapse
Sorry but no, it didn't help me.
Hmmm
IMAGINARY666 said:
Sorry but no, it didn't help me.
Click to expand...
Click to collapse
Take one look at this http://forum.xda-developers.com/showthread.php?t=2602325
I might be wrong but i think you need root to back up the EFS sorry
Can we have another opinion anyone?
Thanks
Oh... We need someone to put a full tutorial here...
IMAGINARY666 said:
Oh... We need someone to put a full tutorial here...
Click to expand...
Click to collapse
Stickied faqs and guides its all posted .
Rooted phone suggest backup EFS via Philz Recovery or EFS Pro see posts .
from the sticky
How do I backup and restore /efs?
There are a few methods to backup /efs, but they all require customisation of your phone. Either root access, or a custom recovery. I appreciate that many of you do not wish to root your phones and just want to flash official ROMs via Odin... Well here are your choices:
Only use OTA or KIES to update (Official Method)
Root using CF auto root / Framaroot - backup efs and THEN flash via ODIN
Flash a custom recovery via Odin, backup efs and THEN flash a ROm via Odin
Risk it. Don't backup efs. Simply flash via Odin and hope for the best
...and here are the options for backing up / restoring efs (this list is not exhaustive)
EFS Pro - App needs root
SGSIII EFS backup / Restore - app runs from Windows / Linux and needs root
kTool - app needs root.
Philz advanced CWM rewcovery - custom recovery can take efs backups using the "Custom Backup" feature.
It's worth noting that some custom ROMs will give the option to backup efs, but you can never have too many backups!
Oops
JJEgan said:
Stickied faqs and guides its all posted .
Rooted phone suggest backup EFS via Philz Recovery or EFS Pro see posts .
Click to expand...
Click to collapse
I forgot to say about Philz recovery amazing recovery i advise anyone to get it but yeah this will work to backup the EFS but you have to be rooted.
If you are rooted you can use Ricky's tool to backup your efs
Sent from my GT-I9300 on SmartDroid http://s14.postimg.org/r1annr6ip/sm_banner_1.png
Meh... I will root the phone with CF Auto root, and then use kTool to backup the EFS. It will create a folder with 2 img files, and I will save that folder on my PC... IS THIS OK?
To backup my stock ROM, what should I do? Give me some ways to do it...
IMAGINARY666 said:
Meh... I will root the phone with CF Auto root, and then use kTool to backup the EFS. It will create a folder with 2 img files, and I will save that folder on my PC... IS THIS OK?
To backup my stock ROM, what should I do? Give me some ways to do it...
Click to expand...
Click to collapse
Use Official Clockworkmode or Philz touch recovery to backup your current ROM.
Sent from my GT-I9300 using Tapatalk
baku2313 said:
Use Official Clockworkmode or Philz touch recovery to backup your current ROM.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
OK... Then I install CM via CM installer. And unfortunately, it says "No network" and i have the generic 0049 IMEI. What to do in this case?
IMAGINARY666 said:
OK... Then I install CM via CM installer. And unfortunately, it says "No network" and i have the generic 0049 IMEI. What to do in this case?
Click to expand...
Click to collapse
FAQS and Guides read EFS
Mod Edit
Thread closed @ [OP] request
malybru
Forum Moderator
Hello Geeks,
I just rooted my galaxy s3, please tell me,
1. What should I need to do before doing anything?
2. how to backup my settings? efs? so that if anything wrong happened, I can restore ?
3. I have rooted, can I UPDATE os? any suggestion?
HELP
vinayak.etx said:
Hello Geeks,
I just rooted my galaxy s3, please tell me,
1. What should I need to do before doing anything?
2. how to backup my settings? efs? so that if anything wrong happened, I can restore ?
3. I have rooted, can I UPDATE os? any suggestion?
HELP
Click to expand...
Click to collapse
Flash a recovery of your choice...via odin
I prefer philz touch recovery...
Go in recovery and backup your current rom... in backup and restore options to ext SD card so that it remains safe when you flash a new rom after factory reset...
2.. Backup efs by any tool available.. There are many on play store...
K tool, neat efs tool etc...
And same thing... Keep it at some safe place so whenever needed it can be used..
3..of course you could upgrade to 4.4.2 if you like.. But as Samsung hasn't released 4.4.2 for s3 so no Samsung features with 4.4.2 as of now...
But 4.3 us available and it's quite stable...
But before flashing any 4.3 Sammy rom change your modem to any modem which is mg4+... read about that on xda..
Always have a legitimate backup in case anything weird happens...
Sent from my GT-I9300
Follow the guides in general forum, sticky thread. If you don't really know what root means for you then why bother?
Sent from my GT-I9300 using Tapatalk
Download ktool from googleplay backup your efs. Copy the backup file somewhere in your computer for safe keeping.
Sent from my GT-I9300 using Tapatalk
Hi everyone,
What would be the general steps to take to update to 4.3 from 4.0.4. I messed up my phone a while back updating (no signal basically, no calls, etc, yeah... my fault for not reading...) so I had to take it to a shop. They downgraded to 4.0.4 and I'm not even sure my IMEI is the same...
Anyways, how can I upgrade and not lose their "fix". I remember reading about backing up my modem, flashing then reflashing my modem. Would that be enough?
Is there any backups that I can do that will create an "image" of the phone that I can safely flash back to in case anything goes wrong?
I currently have SuperSu and I think CWM (but an older version).
Any help would be appreciated!
Backup your efs folder, then make a nandroid of your rom. You will end up with no network after upgrade, try patched modern and kernel but there is no guarantee.
Search and read for the hundreds of other people who did the same thing.
Sent from my GT-I9300 using Tapatalk
boomboomer said:
Backup your efs folder, then make a nandroid of your rom. You will end up with no network after upgrade, try patched modern and kernel but there is no guarantee.
Search and read for the hundreds of other people who did the same thing.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
Hmm, alright.
I'll make an EFS back up and the nandroid of my ROM just in case anyways. Thanks.
zuperxtreme said:
Hmm, alright.
I'll make an EFS back up and the nandroid of my ROM just in case anyways. Thanks.
Click to expand...
Click to collapse
take more than one EFS in many methods rather than single one.
Hello Guys ,,
Can any one who Rooted His Phone Upload Me a Backup Of His EFS Folder ???
My Phone G925F
I cant Restore My IMEI !! There isn`t a network on my mobile !!
Tried EveryThing But All Failed !!
Help Me plzzz ,, Or Give A solution ..
Thannks
Write cert !!!
x7ooda501 said:
Hello Guys ,,
Can any one who Rooted His Phone Upload Me a Backup Of His EFS Folder ???
My Phone G925F
I cant Restore My IMEI !! There isn`t a network on my mobile !!
Tried EveryThing But All Failed !!
Help Me plzzz ,, Or Give A solution ..
Thannks
Click to expand...
Click to collapse
EFS partition is unique for each phone. You'll need to send it back to Samsung to get repaired.
evonc said:
EFS partition is unique for each phone. You'll need to send it back to Samsung to get repaired.
Click to expand...
Click to collapse
They Said To Me That , They Can Repair My Phone But With Risk 50% ~~
If Failed ,, The MotherBoard Of The Phone Will Die ((not work again))
x7ooda501 said:
They Said To Me That , They Can Repair My Phone But With Risk 50% ~~
If Failed ,, The MotherBoard Of The Phone Will Die ((not work again))
Click to expand...
Click to collapse
I'm unsure what the official service center does for this (generate data for your phone and flash or replace motherboard) but that's the only legal and safe way to get it fixed. You can try to flash the factory image and see if it helps but I doubt it will. Should've been more careful flashing stuff and made a backup of your EFS after installing recovery.
evonc said:
I'm unsure what the official service center does for this (generate data for your phone and flash or replace motherboard) but that's the only legal and safe way to get it fixed. You can try to flash the factory image and see if it helps but I doubt it will. Should've been more careful flashing stuff and made a backup of your EFS after installing recovery.
Click to expand...
Click to collapse
it is a big mistake that i didnt make a backup of efs folder :crying::crying::crying::crying:
You can't restore the EFS of others
EFS is the only contains the CERT signature
At the same time, I don't think the flash firmware
can solve the problem of IMEI missing
You need to look for maintenance personnel. 〔This refers not to the samsung company. 〕
Through the repair IMEI to solve this problem
If it is illegal to modify the IMEI in your country
Don 't worry, they can match your the original IMEI
But need to pay attention to, match the IMEI this way there will be a defect Again in the future you can't flash contains firmware of BL documents Otherwise you will continue to lose IMEI because this is a temporary solution
I wish you good luck.
In addition, the "lesson" will give a warning: be sure to backup your EFS file! :laugh: