No efs backup - Galaxy S II Q&A, Help & Troubleshooting

As the title suggest. I need to recover the imei and such but with no backup am i screwed ???

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[Q] How to backup IMEI

I want to ask, how to backup IMEI on ACE. There is no EFS folder in ace.
Is there any one know how to backup it ?

[Q] IMEI 004999010640000/01 after flash - nothing works

I´ve rooted my s3 and now is my IMEI 004999010640000/01 and after that it is not possible to make calls,. I´ve read a lot of pages about restoring IMEI by EFS back up I have, but nothing still work. Can somebody help me??
EFS back up was created after rooting so maybe that the reason, why I cannot restore (restoring works but with false data of IMEI, is it write??) So have can I put my IMEI back without back up??
Thank you
Factory reset flash stock rom that fails it is a service centre repair.
The efs backup is in tar or tar.gz format ? If yes just unpack it using 7zip and copy paste efs folder contents from backup to phone efs folder ....
sent from the state where marijuana is NOT illegal !
You only rooted? Is that the FULL story? How did you root?

EFS Backup with TWRP?

Hi!
Today i will switch from HTC One S to an I9300.
Can i Backup and restore the EFS Partition with TWRP and do i have to restore the EFS Partition after flashing a custom rom?
On my One S i´ve deleted all partitions and the flashed a custom rom but on that phone i did not have to backup any efs data.
thx in advance!
b0mb
You can backup&restore /efs with TWRP.
You should only wipe partitions, offered in TWRP, before flashing another rom. You mustn't restore /efs afterwards. Generally avoid any actions on /efs /dev: high chance of brick of losing your IMEI.
I've seen that there are different tools for backing up EFS partition but using TWRP looks like the easiest way to me....
Afaik these tools don't store anymore than TWRP. So keep it easy. But forum.xda-developers.com/showpost.php?p=56492632&postcount=15 @billa says, that this is no 100%-insurance: IMEI would be saved in dev-partition.
Lost EFS
rp158 said:
Afaik these tools don't store anymore than TWRP. So keep it easy. But forum.xda-developers.com/showpost.php?p=56492632&postcount=15 @billa says, that this is no 100%-insurance: IMEI would be saved in dev-partition.
Click to expand...
Click to collapse
Do you know how to regenerate the efs? I´ve lost it and now i have a corrupt IMEI.
No. Too few details.
First, search in Q&A for it.

[Q] QPST Imei/NVram And EFS Backup Question

Hi All
I was seeking for the answer to my question, but i couldn't find any, so i have to ask here instead, and hopefully someone can answer my question.
I have an Xiaomi Mi6 with Snapdragon 835
I want to know if QPST imei backup tool does backup EFS partition or just Imei/NVram?
Should i backup Imei/NVram with QPST and backup EFS using other method/software?
Whats the different with backup EFS and Backup Imei/NVram?
Thank you

EFS restore

Hello, i need backup file from EFS (anyone) because my IMEI showing 0 ... Please send me anyone backup file of EFS :angel:

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