Hi,
I backup my efs with ktool on XWKI4. Now I am on XWKI8.
So incase of trouble, can I restore my efs backup on any rom or should I revert to KI4 ?
Thanks
Sent from my GT-I9100 using XDA App
It should still work, as the EFS isn't a part that get's written during the ROM flash, unless someone purposely asks Odin to format it during a flash, which is generally a terrible idea.
Hi is is safe to flash stock roms with odin.
can the imei be erased flashing a stock roms?
if so, how can i prevent it?
back up efs with k tools or one of the other backup tools before doing anything, then copy backup to computer/dropbox/flash drive....as many places as you can!
Odin much safer than kies, straight forward to use, just make sure you know what you are doing before proceeding
Odin is the best! Go ahead, you will have no problems if you know how to flash correct.
Be sure to backup efs in first place.
It is better to be safe than sorry.
Is there any way to copy EFS folder without root? from pc or something?
i want to stay stock.
As far as I know, there isn't. You have to root and then use something like EFS backup pro for efs folder backup.
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0mega007 said:
Is there any way to copy EFS folder without root? from pc or something?
i want to stay stock.
Click to expand...
Click to collapse
You need root access to backup the efs folder.
I tried out SlimROM to see if it supported exFAT cards, and it doesn't. Upon restoring my complete nandroid backup, everything works, except for no valid IMEI, and I can't connect to any Wi-Fi access point. How do I get my IMEI back?
k-semler said:
I tried out SlimROM to see if it supported exFAT cards, and it doesn't. Upon restoring my complete nandroid backup, everything works, except for no valid IMEI, and I can't connect to any Wi-Fi access point. How do I get my IMEI back?
Click to expand...
Click to collapse
Do u have a backup of ur efs?
Sent from my GT-I9300 using xda app-developers app
Your Nandroid was probably v1 efs, but you updated to v2 with your new custom rom.
Just flash the latest off official firmware and factory reset. If you are lucky then efs will be read again, if not then you will need your efs backup.
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JellyYogurt said:
Do u have a backup of ur efs?
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Click to expand...
Click to collapse
Thats actually what corrupted it. I did a full nandroid backup of my system, EFS included, and whrn I restored from backup, I now have s 0049 IMEI. Restoring to stock eith Odin got my Wi-Fi back, but I syill hsve thr wrong iMEI. If I repartition using thr *.pit file, will that restore the IMEI?
k-semler said:
Thats actually what corrupted it. I did a full nandroid backup of my system, EFS included, and whrn I restored from backup, I now have s 0049 IMEI. Restoring to stock eith Odin got my Wi-Fi back, but I syill hsve thr wrong iMEI. If I repartition using thr *.pit file, will that restore the IMEI?
Click to expand...
Click to collapse
No. Do NOT repartition the phone. Can I know ur baseband version?
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XXUGNA8 is the version that came with the ROM. Or did you mean on the phone IMEI sticker?
k-semler said:
XXUGNA8 is the version that came with the ROM. Or did you mean on the phone IMEI sticker?
Click to expand...
Click to collapse
Hmm tats weird. Can u try kies emergency firmware tool?
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JellyYogurt said:
Hmm tats weird. Can u try kies emergency firmware tool?
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Now it's in factory mode. Here's the screenshot:
back up EFI
k-semler said:
I tried out SlimROM to see if it supported exFAT cards, and it doesn't. Upon restoring my complete nandroid backup, everything works, except for no valid IMEI, and I can't connect to any Wi-Fi access point. How do I get my IMEI back?
Click to expand...
Click to collapse
you should have backup your EFI file,and then flash a 412 rom,and recover your EFI file
Well, I found a solution here on XDA for the i747, but the procedure doesn't seem to work at all for the i9300. I would link to the post, but I'm not sure if the link would violate the rules, (even though it's an internal link), so I won't link directly to it. Is there a solution similar to the procedure in the i747M XDA boards, but for the i9300?
chujung24 said:
you should have backup your EFI file,and then flash a 412 rom,and recover your EFI file
Click to expand...
Click to collapse
I thought that's what I was doing when I ran a complete NANDroid backup with TWRP. Restoring the EFS failed, and now I have an expensive PDA with wifi access. I would like to get cellular connectivity back.
some times flashing back the old ROM fixes efs corruption
i tried to install 4.1.2 after the poor 4.3 update and efs was gone... after that i reinstal 4.3 and restore the efs..
(i already had efs backup but didn't fix it on 4.1.2)
There is a sticky thread for i9300 efs problems in the general forum, with some suggestions for those with a backup.
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k-semler said:
Thats actually what corrupted it. I did a full nandroid backup of my system, EFS included, and whrn I restored from backup, I now have s 0049 IMEI. Restoring to stock eith Odin got my Wi-Fi back, but I syill hsve thr wrong iMEI. If I repartition using thr *.pit file, will that restore the IMEI?
Click to expand...
Click to collapse
That is what you need to establish - do you or do you not have a backup of the EFS? (a "normal" nandroid backup does NOT include the EFS).
If you do not - you will probably need to write your SN and IMEI from under the battery using some box like nspro or z3x.
xclub_101 said:
That is what you need to establish - do you or do you not have a backup of the EFS? (a "normal" nandroid backup does NOT include the EFS).
If you do not - you will probably need to write your SN and IMEI from under the battery using some box like nspro or z3x.
Click to expand...
Click to collapse
I used the NANDroid backup function available in TWRP 2.7.0.0, and checked the "EFS" box. I saved the backup to my external SD card. When I tried to restore it, I have no IMEI, and I end up losing Wi-Fi access. Flashing back an OEM ROM restores Wi-Fi access, but not my IMEI.
I FIXED IT!!! **** YES!! ROM Toolbox Pro backed up the EFS partition 3 weeks ago! I was able to restore my IMEI using the search function in Root Explorer Pro, by entering in efs as my search term, and searching my removable MicroSD card! THANK GOD! I HAVE CELLULAR BACK!!
S3 GT-i9300
Australia
I have a efs backup that i need instructions on how to restore.
Files are currently stored on my ex sd-card
I want to use an app and my backup files, but dont know where any apps store the efs backups.
Can anyone give instructions on where i should copy and past my backups to allow an app to use the files i already have.
Ktools
efs backup
what ever
just give me a location to copy and paste my efs backup files so that i can restore my imie to the correct number please via an app or other method
I dont know how to use terminal or sdk adb
Depends on the format of your backup, search for similar threads and follow the one that worked -or go read the sticky thread on efs.
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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.