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Hi.
I flashed a rom and lost connection with the network and have only "emergency calls only" thingy..
I did a nandroid restore, but still no possibillities to call out.. get: "mobile network not available"
Then i checked settings->about->status -> network. and it says Unknown. So i
tried to select a network manually, but I only get the message: "unable to connect. Try later"
then i see my imei, and it looks wierd. 00499901064XXXX
but on the back of my phone its: 35815004574XXXX
when you flash a rom, does it change the imei, or is it suppose to be that way?
can anyone help me with this problem? since i cant call out at all
tnx for all help in advanced
Flashing ROMs shouldn't affect your IMEI.
The phone has a security storage area called "EFS", it's likely that one is corrupted, you IMEI you see is a dummy IMEI.
It sounds like you never mafe a backup of said EFS data, so best thing to do is to flash back a stock ROM and return it for replacement or repair.
There have already been numerous cases where the EFS corrupted out of no aparent reason....
You have to do a complete wipe and then flash back your backup
Sent from my GT-I9100 using XDA Premium App
Hi,
After reading the above comments, i am bit worried about my phone.....Can you please let me know how to safely do this process.....i mean how to take backup of the EFS ( am i spelled correctly???) and other important files....
There is a thread in development that guides you to do an efs backup. I just copied my whole efs folder to my external sd card and backed up on my computer. Then if you corrupt the one on your phone, you can copy the backup you made over the corrupted efs folder.
Sent from my GT-I9100 using XDA Premium App
This is the first and foremost thing for users to do right after you root.
Sent from my GT-I9100 using XDA Premium App
smilingcruel said:
Hi,
After reading the above comments, i am bit worried about my phone.....Can you please let me know how to safely do this process.....i mean how to take backup of the EFS ( am i spelled correctly???) and other important files....
Click to expand...
Click to collapse
Check my "Companion Tool" from my kernel thread (see sig for link), it can make a backup and restore it with a simple button tap
tnx for all replys
but wouldn't a nandroid backup do the efs folder too? This i did right after i rooted the phone.
Nope, AFAIK Nandroid does not touch the EFS partition.
http://forum.xda-developers.com/showpost.php?p=25509654&postcount=279
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.
I have GS3 i9300 International version.
My EFS partition has been corrupted.
I already have the backup available i took with EFS backup pro but when i now connect through it it doesn't pick it up even though i have put it in the same directory.
I also tried to backup the existing EFS folder (Which doesn't have anything in it) using Root Explorer in Phone but got an error 'Can't locate Mount Point!"
How can i restore my EFS folder again? Any suggestion will be helpful as i have been trying to read all what is available at XDA.
There is no IMEI and baseband available. I had the stocked firmware when this happened with CF root and Siyak Kernel.
I have checked in CWM Recovery mode.
All partitions are mounted except EFS and i am not able to mount it even in recovery.
So after like 24 hrs, i am finally able to restore everything back to normal .
Since the efs partition was not mounting, i used the following commands to do so manually in terminal
Code:
mke2fs /dev/block/mmcblk0p3
mount -w -t ext4 /dev/block/mmcblk0p3 /efs
The link that helped me realize this was
http://forum.xda-developers.com/showthread.php?t=1857811
After running this command i had signals and Wifi begins working but IMEI was turned to generic.
Then i turned to EFS bakup pro and this time successfully restored my efs folder and getting my origional IMEI back.
So all this taught me that flashing and tinkering with your android phone carries a huge risk and we should all be prepared to face such issues if decided to do so.
But really, what's the fun if we don't .
Following are some issues that i faced during this whole process which i am sharing if anybody else gets in the same situations
- The first thing i did was to flash the stock firmware but this lead to an unrooted phone again
- I used CF root to gain root privileges again but supersu was asking for binary updates before giving root permission to other programs.
- So i downloaded SAMSUNG GALAXY S3 TOOLKIT which is an excellent resource for everything related to rooting, flashing and backing up GS3.
- I rooted with busybox so that EFS backup pro can be used.
- Since my GS3 was not having mobile or wifi signal, this toolkit helped a great deal.
- One small thing that i missed was place my EFS back in a folder named "EFSProBackup" which is to be placed in the same directory as the executable of EFS Pro so that it can recognize it in restoration tab.
I hope this will be helpful if anyone gets stuck in this issue.
Oh glad you resolved it
This shows how important an efs backup is
《spilled from dragon jellybean rom》
Thanks for dropping by bg
I had ruined my i9000 same way and used it for a year with generic imei. I had to copy paste the efs folder everytime i rebooted the phone. Now i am on i9100 but i havent yet backed up my efs, can you guide me how to do it?
Download EFS Pro from here EFS Pro.
Connect your phone with pc via USB and make sure you are not using USB Mass Storage mode.
Start EFS Pro. Obviously, you need to be rooted and have busybox installed for this application to run.
Your phone information will be displayed once it's connected.
Create a backup of your EFS Folder either with a .img or .tar extension.
And keep flashing hassle free .
TSKXDA said:
Download EFS Pro from here EFS Pro.
Connect your phone with pc via USB and make sure you are not using USB Mass Storage mode.
Start EFS Pro. Obviously, you need to be rooted and have busybox installed for this application to run.
Your phone information will be displayed once it's connected.
Create a backup of your EFS Folder either with a .img or .tar extension.
And keep flashing hassle free .
Click to expand...
Click to collapse
Thanks alot man. I'll do this asap.
TSKXDA said:
So after like 24 hrs, i am finally able to restore everything back to normal .
Since the efs partition was not mounting, i used the following commands to do so manually in terminal
Code:
mke2fs /dev/block/mmcblk0p3
mount -w -t ext4 /dev/block/mmcblk0p3 /efs
The link that helped me realize this was
http://forum.xda-developers.com/showthread.php?t=1857811
After running this command i had signals and Wifi begins working but IMEI was turned to generic.
Then i turned to EFS bakup pro and this time successfully restored my efs folder and getting my origional IMEI back.
So all this taught me that flashing and tinkering with your android phone carries a huge risk and we should all be prepared to face such issues if decided to do so.
But really, what's the fun if we don't .
Following are some issues that i faced during this whole process which i am sharing if anybody else gets in the same situations
- The first thing i did was to flash the stock firmware but this lead to an unrooted phone again
- I used CF root to gain root privileges again but supersu was asking for binary updates before giving root permission to other programs.
- So i downloaded SAMSUNG GALAXY S3 TOOLKIT which is an excellent resource for everything related to rooting, flashing and backing up GS3.
- I rooted with busybox so that EFS backup pro can be used.
- Since my GS3 was not having mobile or wifi signal, this toolkit helped a great deal.
- One small thing that i missed was place my EFS back in a folder named "EFSProBackup" which is to be placed in the same directory as the executable of EFS Pro so that it can recognize it in restoration tab.
I hope this will be helpful if anyone gets stuck in this issue.
Click to expand...
Click to collapse
Thanks TSKXDA !
With this i able to mount /efs and sucessfull recover my EMEI !
Thanks again !
Hi there.
I'm with the exact same problem and I can't solve it cause shell says "Permission Denied".
Anything I can do?
RE
Press
su
before entering the commands
Unable to mount efs (same problem) but..
my phone just keep boot looping i tried to flash to stock and every time i wipe and clear cache i says unable to mount efs please help thanks
jhemartija said:
my phone just keep boot looping i tried to flash to stock and every time i wipe and clear cache i says unable to mount efs please help thanks
Click to expand...
Click to collapse
As per identical posts .
Restore your backed up EFS folder ..
If you failed to backup your EFS folder then its a paid for service centre repair .
jje
JJEgan said:
As per identical posts .
Restore your backed up EFS folder ..
If you failed to backup your EFS folder then its a paid for service centre repair .
jje
Click to expand...
Click to collapse
i failed to back up, is there any other way? thanks by the way..
jhemartija said:
i failed to back up, is there any other way? thanks by the way..
Click to expand...
Click to collapse
As per ten thousand plus identical posts no .
jje
Any way if converting a .win backup of my EFS to .img? That's how my EFS got backed up. Also what's this I hear of a generic imei?
Sent from my Nexus 7 using XDA Premium HD app
Just read what the generic imei means. 0049
baseband unknown and imei null
JJEgan said:
As per ten thousand plus identical posts no .
jje[/QUOTE
Dear JJEgan,
i had done a back up of efs via EFS PRO and restored it via EFS PRO and restore was successful but the baseband is still unknown and imei still null.plz help this time i had read everything and done as per instructions and i have a backed up efs in my phone and pc as well
thanks in advance
Click to expand...
Click to collapse
bala_gamer said:
Oh glad you resolved it
This shows how important an efs backup is
《spilled from dragon jellybean rom》
Click to expand...
Click to collapse
Dear bala_gamer,
my name is gaurav.i've a gti9300 and l was on stock 4.1.2,i flashed resurrection remix rom and now i've following issues:-
1) BASEBAND VESRION-UNKNOWN
2)IMEI-UNKNOWN
3)MOBILE NETWORK-UNKNOWN
4)NO CALLS,no network although wifi is running smoothly and rest all is fine with the phone.i flashed back stock 4.1.2 and restored EFS via EFS PRO(which i had earlier taken backup on my pc) but the problem still remains although EFS PRO restore was successful
Further info:-
1)i can locate an EFS folder in the normal file manager which is empty
2)in the root explorer i can see an EFS folder with 18 files in it.
plz help thanks in advance,waiting for a quick response from your side
file manager shows empty because it is not operating with permissions to see it. This is not relevant.
use root explorer only
Just flash MG5 stock ROM from India. If it is still broken, send it for repair. Simple as that
TSKXDA said:
Download EFS Pro from here EFS Pro.
Connect your phone with pc via USB and make sure you are not using USB Mass Storage mode.
Start EFS Pro. Obviously, you need to be rooted and have busybox installed for this application to run.
Your phone information will be displayed once it's connected.
Create a backup of your EFS Folder either with a .img or .tar extension.
And keep flashing hassle free .
Click to expand...
Click to collapse
Dear TSKXDA,
I did exactly the same way and took a back up then flashed a custom rom and lost baseband version and imei, i then flashed back to stock rom restored EFS via EFS pro but the issue still remains.You can see my numerous posts in this forum,plz help me out thanks in advance
I've flashed roms and mods on my Sgs2 since I bought it 2 years ago. I've bricked it a few times and I always managed to fix it by myself, I only asked for help when my WiFi stopped working and I couldn't get signal at all only emergency calls (Never found fix for WiFi).
Anyway, I'm facing a similar problem now with my IMEI, I had this problem before and I learned how to fix it but now nothing works.
I've used EFS Pro, Restored a nandroid, flashed a stock samsung JB ROM (even though I don't think ROMs do anything to efs) I used kTool from Hellcat and the only way to make it work is doing my nandroid restore (CM9.. old nandroid backup) and copy pasting my efs folder I have backed up, however, If I copy paste the folder using another ROM (thats how I always fixed my corrupted imei) it doesn't work anymore, It only works once after restoring nandroid CM9, If i flash CM9 Odin it doesn't work, any ROM I install gives me corrupted imei. this problem started happening since I flashed stock JB ROM, I NEVER could use stock JB ROM without losing my IMEI, and I wasn't able to put it back by copy pasting efs folder (always used to work when i had this problem) another thing ~ I used NukeWipe Script ~ before moving to Android 4.2.2 now I only can use my phone with CM9 from my nandroid and fixing the imei there by copy pasting my backed up EFS. If I flash anything else my IMEI gets corrupted and I can't fix it with anything! hoping for some help, I would like to know how much will it cost me to fix this, take in mind that I'm from Mexico and USD is pretty expensive here
PS: I also tried the tutorial of Recover IMEI in 9 steps and it didn't work.
When I restore my nandroid I have a corrupted imei and no signal, my nandroid doesn't have a file explorer so I download one from market.. how do I download one from market if i have no signal at all and corrupted imei? I don't know ... I don't even have the 3G icon or any signal and it says no service but internet works fine.
PunkOz said:
I've flashed roms and mods on my Sgs2 since I bought it 2 years ago. I've bricked it a few times and I always managed to fix it by myself, I only asked for help when my WiFi stopped working and I couldn't get signal at all only emergency calls (Never found fix for WiFi).
Anyway, I'm facing a similar problem now with my IMEI, I had this problem before and I learned how to fix it but now nothing works.
I've used EFS Pro, Restored a nandroid, flashed a stock samsung JB ROM (even though I don't think ROMs do anything to efs) I used kTool from Hellcat and the only way to make it work is doing my nandroid restore (CM9.. old nandroid backup) and copy pasting my efs folder I have backed up, however, If I copy paste the folder using another ROM (thats how I always fixed my corrupted imei) it doesn't work anymore, It only works once after restoring nandroid CM9, If i flash CM9 Odin it doesn't work, any ROM I install gives me corrupted imei. this problem started happening since I flashed stock JB ROM, I NEVER could use stock JB ROM without losing my IMEI, and I wasn't able to put it back by copy pasting efs folder (always used to work when i had this problem) another thing ~ I used NukeWipe Script ~ before moving to Android 4.2.2 now I only can use my phone with CM9 from my nandroid and fixing the imei there by copy pasting my backed up EFS. If I flash anything else my IMEI gets corrupted and I can't fix it with anything! hoping for some help, I would like to know how much will it cost me to fix this, take in mind that I'm from Mexico and USD is pretty expensive here
PS: I also tried the tutorial of Recover IMEI in 9 steps and it didn't work.
When I restore my nandroid I have a corrupted imei and no signal, my nandroid doesn't have a file explorer so I download one from market.. how do I download one from market if i have no signal at all and corrupted imei? I don't know ... I don't even have the 3G icon or any signal and it says no service but internet works fine.
Click to expand...
Click to collapse
Back up your efs folder with another app like galaxy s unlock or something (some apps make a copy of the EFS folder while other apps make an image of it), copy them to your PC then flash stock with mobile odin and see what happens.
gastonw said:
Back up your efs folder with another app like galaxy s unlock or something (some apps make a copy of the EFS folder while other apps make an image of it), copy them to your PC then flash stock with mobile odin and see what happens.
Click to expand...
Click to collapse
I managed to get my imei back, codeworkx helped me, all i had to do was restore efs and then flash stock GB check if i still have my imei then flash ics then check if i had my imei then flash the old rom i had (mcm 4.2.1) and i had my imei but ... i tried to update to 4.2.2 nightly and my imei got corrupted, can't restore it while using 4.2.2, I couldn't use stock JB because of this, im guessing this is happening in 4.2.2 because they're using new stuff from stock JB.
Any ideas?
Could be, tattoo EFS on your arm just in case.
Sent from the little guy
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.
Sent from my GT-I9300 using Tapatalk
JellyYogurt said:
Do u have a backup of ur efs?
Sent from my GT-I9300 using xda app-developers app
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?
Sent from my GT-I9300 using xda app-developers app
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?
Sent from my GT-I9300 using xda app-developers app
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.
Sent from my GT-I9300 using Tapatalk
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!!