Hi everyone.,.,I flash omega v43.9 a few hours ago.,.and i flash again the omega v46.1 and i noticed that i can't call or send SMS or even going to the internet.,,.i know its the new 4.1.2 update caused the problem and i forgot to backup my EFS.,.,can anybody give me something that can fix this?.,.maybe an EFS backup and how to restore it?,:crying:
Read this. It might help - http://forum.xda-developers.com/showthread.php?p=44303955
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knyjay88 said:
Hi everyone.,.,I flash omega v43.9 a few hours ago.,.and i flash again the omega v46.1 and i noticed that i can't call or send SMS or even going to the internet.,,.i know its the new 4.1.2 update caused the problem and i forgot to backup my EFS.,.,can anybody give me something that can fix this?.,.maybe an EFS backup and how to restore it?,:crying:
Click to expand...
Click to collapse
If You failed to backup your EFS their is no fix .
Each EFS is individual .
jje
Related
Does ne1 know why i keep losing my IMEI everytime i flash the I9300XXUFME7_I9300OXAFME7_OXA rom. i've used this test firmware before and everything was ok and then i went to an official rom. But when i reflashed this rom, I keep getting 004999010640000 / 01 on my IMEI.
Follow link to sticky roll-up in my signature. Read the imei / efs thread
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I have the exact problem, and am stuck with omega 4.1.2 for weeks now !
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See above
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okizen said:
Does ne1 know why i keep losing my IMEI everytime i flash the I9300XXUFME7_I9300OXAFME7_OXA rom. i've used this test firmware before and everything was ok and then i went to an official rom. But when i reflashed this rom, I keep getting 004999010640000 / 01 on my IMEI.
Click to expand...
Click to collapse
Asseel said:
I have the exact problem, and am stuck with omega 4.1.2 for weeks now !
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Click to expand...
Click to collapse
This is from the Omega thread OP..
1. Make sure to make and keep in a safe place an efs backup - nadroid backup - titanium backup - etc, in case you ever need to restore!
2. With the new firmware from Samsung for the S3 they have changed some security code that will disable the use of older modems, the new update changes the EFS partition which makes it impossible for an older modem being use without upsetting your IMEI (No Phone Signal), please make sure you do have a backup of your EFS in a safe place before you flash to the latest Omega ROM.
This is what Samsung has done, and it seems that its being done to all the new Modems on all the high end devices.
More info
3. Flash with No Full Wipe only from v43.x and previous Omega 4.1.2 versions - if
Click to expand...
Click to collapse
Hi
Just wondered about this efs and imei trouble, does this concern all newer (or older) roms? I've got ultimarom v12 on my international s3 going good, but wonder about changing to the newest ultimarom but then I read about problems with imei.
Is this something new you have to do with all roms now?
Frode
EFS and IMEI problems since day one especially for noobs who have not read the basic faqs and guides and have no EFS backup .
Current released firmware Samsung have changed the EFS Folder .
http://forum.xda-developers.com/showthread.php?t=2377731
jje
I have rooted and installed ultimarom without any problems. was I just lucky then? Do you have to take backup of efs folder every time? It's not good enough with backup of rom when you flash a new rom?
Frode
molland said:
I have rooted and installed ultimarom without any problems. was I just lucky then? Do you have to take backup of efs folder every time? It's not good enough with backup of rom when you flash a new rom?
Frode
Click to expand...
Click to collapse
As written in the guides, you should make a backup of your efs at the very beginning one time and keep it somewhere safe. Without imei and efs backup otherwise you have to go back to Samsung...
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ok, but since its working now, can I take a backup now of the efs folder for later use?
Frode
molland said:
ok, but since its working now, can I take a backup now of the efs folder for later use?
Frode
Click to expand...
Click to collapse
Save a backup. When creating other backups though....skip efs
Sent from my Galaxy Nexus using xda app-developers app
molland said:
ok, but since its working now, can I take a backup now of the efs folder for later use?
Frode
Click to expand...
Click to collapse
Yes !!!
sent from the state where marijuana is NOT illegal !
@kangerX Thats an answer I like
Can I use a tool like one of these : http://forum.xda-developers.com/showthread.php?t=1901098 or : efs pro 1.9.12 to take a backup with?
Frode
used Ktool now and took a backup of efs, now I've got to files, one img and one tar file, copy to my pc og cloud storage
I have searched and think I know what I'm doing, but I wonder if some kind soul could confirm what I think, before I eff my phone up?
I'm currently running a 4.2.2 Samsung ROM (Archidroid) but I'm not happy with the lag. I want to go back to a 4.1.2 ROM.
Am I correct in thinking that I can just flash the new ROM and then restore my EFS backup, and I won't have a problem with losing my IMEI/phone going into factory mode, etc? My EFS backup was done when I was on a 4.1 ROM. Or do I need to restore EFS before flashing the new ROM?
Thanking you!
setspeed said:
I have searched and think I know what I'm doing, but I wonder if some kind soul could confirm what I think, before I eff my phone up?
I'm currently running a 4.2.2 Samsung ROM (Archidroid) but I'm not happy with the lag. I want to go back to a 4.1.2 ROM.
Am I correct in thinking that I can just flash the new ROM and then restore my EFS backup, and I won't have a problem with losing my IMEI/phone going into factory mode, etc? My EFS backup was done when I was on a 4.1 ROM. Or do I need to restore EFS before flashing the new ROM?
Thanking you!
Click to expand...
Click to collapse
just back up efs every time. be sure> flashing firmwares based on MG, changes efs format to a new one. after that if you wanna flash a firmware based on previous releases(to XXEMG4), you will be facing network problems like no data connection, no calls, no text messages etc., so once you flash a firmware i.e released after MG4, be sure the next custom rom/ stock f/w you flash is newer to it. good luck
Can I not flash an older firmware safely by restoring my EFS? Or is it risky?
setspeed said:
Can I not flash an older firmware safely by restoring my EFS? Or is it risky?
Click to expand...
Click to collapse
go through this thread: http://forum.xda-developers.com/showthread.php?t=2393289
:good:
sriram231092 said:
go through this thread: http://forum.xda-developers.com/showthread.php?t=2393289
:good:
Click to expand...
Click to collapse
Yeah thanks, I've read that more than once:
If you have ever flashed XXEMG* (or newer) ROM, to keep your IMEI working, you must:
1. Stay with the EFS v2 basebands (MG* or newer). You may flash other ROMs but must return to the MG* (or newer) baseband
2. Restore your EFS backup (taken before XXEMG* or newer ROM install) to use older (EFS v1) basebands. EFS backup must be an EFSv1 backup to use an EFS v1 baseband
3. If the above don't work, consider sending for repair...
This is the part I am worried about.
setspeed said:
Yeah thanks, I've read that more than once:
If you have ever flashed XXEMG* (or newer) ROM, to keep your IMEI working, you must:
1. Stay with the EFS v2 basebands (MG* or newer). You may flash other ROMs but must return to the MG* (or newer) baseband
2. Restore your EFS backup (taken before XXEMG* or newer ROM install) to use older (EFS v1) basebands. EFS backup must be an EFSv1 backup to use an EFS v1 baseband
3. If the above don't work, consider sending for repair...
This is the part I am worried about.
Click to expand...
Click to collapse
that's what exactly i was trying to tell you. XXEMG4 f/w is some what problematic but the f/w-s released after that are good enough. once you flash any of these f/w-s, back up your efs for sure.
:good:
Yes, but I want to go back to a ROM with an earlier baseband than EMG4, so I can use a custom kernel. The performance on later ROMs with the standard kernel (which is all you can use at the moment) is not satisfactory.
So my question is, in order to go back to a ROM based on firmware earlier than EMG4, can it be done SAFELY? If so, do I need to restore my EFS backup before I flash the ROM or afterwards? Or, if it's not safe then what should I do to minimise my chances of messing my phone up?
setspeed said:
Yes, but I want to go back to a ROM with an earlier baseband than EMG4, so I can use a custom kernel. The performance on later ROMs with the standard kernel (which is all you can use at the moment) is not satisfactory.
So my question is, in order to go back to a ROM based on firmware earlier than EMG4, can it be done SAFELY? If so, do I need to restore my EFS backup before I flash the ROM or afterwards? Or, if it's not safe then what should I do to minimise my chances of messing my phone up?
Click to expand...
Click to collapse
yes you can. you can even flash a custom kernel on MG4 or later buddy!
i loss my imei and sn by downgrading 4.2.2 to 4.1.2 No Network NO imei emergency calls. but somehow My IMEI and NETWORK is back but not SN number
chuchusweet said:
i loss my imei and sn by downgrading 4.2.2 to 4.1.2 No Network NO imei emergency calls. but somehow My IMEI and NETWORK is back but not SN number
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1918601
sriram231092 said:
http://forum.xda-developers.com/showthread.php?t=1918601
Click to expand...
Click to collapse
its not working i tried
chuchusweet said:
its not working i tried
Click to expand...
Click to collapse
Try different 4.1.2 stock roms prior to 'MG' series. Make a clean installation.
As you were on 4.2.2, you were probably not on efs v2. Take backup of efs.
Sent Via I9300, Stock XXUFME7, 4.2.2.
how to restore to 4.1.2??
I have installed 4.4.2 AOKP firmware on S3 GT I9300. I have backup of previous version 4.1.2 through CWM backup. Now i am trying to restore 4.1.2 backup through CWM but unable to do. I have tried a lot but can't restore previous.
Plz anybody help me resolving this issue. how to restore my previous version 4.1.2 from 4.2.2 with the existing backup?
Thankss if anybody help me out.
Hi all, I know that i have to backup my EFS in order to change ROM's (I already have it backed up), but my question is, will efs folder be corrupt if i change only 4.1.2 ROM's, or is it just due to downgrade from 4.3 to 4.x.x.
I had my phone service twice because my efs was corrupt, and yes, i have restored my valid and good efs, when the signal was working, but it didn't help.
So I am just asking will i break my efs with changing from for ex. stock 4.1.2 to some custom 4.1.2 rom?
Also, I can't backup my efs via EFS professional, it cannot create the final step creating .tar file, I did efs backup with k-tool but when i restored my valid efs it was also no signal problem. Everything went good with backing up to PC.
Yes, I read other threads, but I am just asking for a direct opinion.
Thx in front.
Direct opinion is read the efs 'know this stuff' sticky -tells you everything you need to know.
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boomboomer said:
Direct opinion is read the efs 'know this stuff' sticky -tells you everything you need to know.
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Click to expand...
Click to collapse
Ok, so, if I am on XXEMG4 firmware i must stick to MG based basebands/firmwares in order for my efs to work, right?
XXEMG4 or later, any baseband/firmware after this will work with efs v2
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boomboomer said:
XXEMG4 or later, any baseband/firmware after this will work with efs v2
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Click to expand...
Click to collapse
Thank You!
Hi everyone,
Before I flash a custom rom, I would like to know the answer to some questions I have.
This is the situation: I have an international galaxy s3, I9300XXELLA, with stock rom and android 4.1.2 and I'm interested in flashing the latest cyanogenmod 11 milestone.
I would make a nandroid backup first, so will I be able to just flash my nandroid of version 4.1.2 and downgrade from android version 4.4.2 to 4.1.2?
Also, if I make a nandroid of cyanogenmod 11, will I be able to just switch between the two roms like it's nothing?
Sorry if my questions are noob, but I've tried to downgrade before and I got stuck in a bootloop, I don't want to get this problem again..
And yes, I've searched google.
Any help is greatly appreciated!
Hi everyone,
Before I flash a custom rom, I would like to know the answer to some questions I have.
This is the situation: I have an international galaxy s3, I9300XXELLA, with stock rom and android 4.1.2 and I'm interested in flashing the latest cyanogenmod 11 milestone.
I would make a nandroid backup first, so will I be able to just flash my nandroid of version 4.1.2 and downgrade from android version 4.4.2 to 4.1.2?
Also, if I make a nandroid of cyanogenmod 11, will I be able to just switch between the two roms like it's nothing?
Sorry if my questions are noob, but I've tried to downgrade before and I got stuck in a bootloop, I don't want to get this problem again..
And yes, I've searched google.
Any help is greatly appreciated!
Click to expand...
Click to collapse
U cant switch like its nth. Whenever u go from cm11 to stock 4.1.2, u have to restore ur efs v1. Wat modem are u using atm?
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JellyYogurt said:
U cant switch like its nth. Whenever u go from cm11 to stock 4.1.2, u have to restore ur efs v1. Wat modem are u using atm?
Sent from my SM-N9005 using xda app-developers app
Click to expand...
Click to collapse
I'm sorry isn't my modem the XXELLA I already gave?
And how do I restore my efs v1 then, and what is it?
Thanks
Sent from my GT-I9300 using XDA Premium 4 mobile app
The above post is absolutely wrong. Custom ROMS including CM never include a modem in the RO
Wrong wrong wrong custom roms may and indeed do include a modem or even a choice of modems . Fairly obvious from reading rom descriptions .Modem: BUUGMJ3 Modem: XXUGMK6
Modem:
- XXEMG4
- BUUGMJ3
- XXUGMJ9
- XXUGMK6
- DDUGMK1
Vinceee said:
I'm sorry isn't my modem the XXELLA I already gave?
And how do I restore my efs v1 then, and what is it?
Thanks
Click to expand...
Click to collapse
Also do not flash any roms untill you know what efs is and how to back it up! not doing so may lead to a unusable phone read this >> http://forum.xda-developers.com/showthread.php?t=2393289 << and post any questions regarding efs in the thread.
JJEgan said:
The above post is absolutely wrong. Custom ROMS including CM never include a modem in the RO
Wrong wrong wrong custom roms may and indeed do include a modem or even a choice of modems . Fairly obvious from reading rom descriptions .Modem: BUUGMJ3 Modem: XXUGMK6
Modem:
- XXEMG4
- BUUGMJ3
- XXUGMJ9
- XXUGMK6
- DDUGMK1
Click to expand...
Click to collapse
Extract CM ROM zip and see for yourself if it includes a modem or not.
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tallman43 said:
Also do not flash any roms untill you know what efs is and how to back it up! not doing so may lead to a unusable phone read this >> http://forum.xda-developers.com/showthread.php?t=2393289 << and post any questions regarding efs in the thread.
Click to expand...
Click to collapse
Okay I've read the topic about efs and IMEI, but I'm not sure if I understand everything correctly
Please correct me if I'm wrong and feel free to give extra information, this is what I think I understand:
Once I flash a rom that was made after the efs format change, I can't go back to a previous version of my modem on that rom.
If I make an efs backup with CWM, I CAN restore it only if I go back to my stock android 4.1.2 (?)
But do I need to restore my efs backup on my new rom? I thought that wasn't necessary..
And another thing, I already succesfully installed a PA version AFTER the format change (I think android 4.3), and was able to go back to stock 4.1.2.. Got a bootloop but was able to fix that in recovery. The stock rom still works, never had problems with the modem what so ever, the only thing I did was restore my nandroid backup of 4.1.2, fixed the bootloop in recovery, and got a working, factory resetted 4.1.2...
So if I flash CM11, will I be able to go back to stock if I use a nandroid (and efs) backup?
Can someone give me a step by step tutorial please? (I just want to know what I have to do)
Vinceee said:
I'm sorry isn't my modem the XXELLA I already gave?
And how do I restore my efs v1 then, and what is it?
Thanks
Click to expand...
Click to collapse
No. Modems have a number at the last. Like MG4. Etc
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JellyYogurt said:
No. Modems have a number at the last. Like MG4. Etc
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Click to expand...
Click to collapse
Then please let me know where to find it, because I can't seem to find a code that ends in a number at 'about phone'
Vinceee said:
Then please let me know where to find it, because I can't seem to find a code that ends in a number at 'about phone'
Click to expand...
Click to collapse
Baseband version.
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---------- Post added at 07:56 AM ---------- Previous post was at 07:54 AM ----------
Btw. U can switch nandroids between stock and cm 11. But rmb to factory reset then restore nandroid.
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JellyYogurt said:
Baseband version.
Sent from my GT-I9300 using xda app-developers app
---------- Post added at 07:56 AM ---------- Previous post was at 07:54 AM ----------
Btw. U can switch nandroids between stock and cm 11. But rmb to factory reset then restore nandroid.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
It says I9300XXELLA like I told you before..
I can take a screenshot if you don't believe me
Vinceee said:
It says I9300XXELLA like I told you before..
I can take a screenshot if you don't believe me
Click to expand...
Click to collapse
Okay. But like I said. U can switch between nandroids. Just factory reset before each restore.
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JellyYogurt said:
Okay. But like I said. U can switch between nandroids. Just factory reset before each restore.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Thanks, so I don't have to worry about the modems or the efs? Even though my build version is from before MG2?
So for switching to CM and back to stock, I should do:
- make a titanium backup of apps
- make nandroid backup of 4.1.2
- factory reset/wipe cache/wipe dalvik cache
- flash CM
- factory reset/wipe cache/wipe dalvik cache
- (test CM rom, put on some apps ect.)
- make nandroid backup of 4.4.2
- factory reset/wipe cache/wipe dalvik cache
- flash nandroid of 4.1.2
- factory reset/wipe cache/wipe dalvik cache
- reboot
- restore apps with titanium backup
Will this work?
Thanks everyone, any help is welcome
Vinceee said:
Thanks, so I don't have to worry about the modems or the efs? Even though my build version is from before MG2?
So for switching to CM and back to stock, I should do:
- make a titanium backup of apps
- make nandroid backup of 4.1.2
- factory reset/wipe cache/wipe dalvik cache
- flash CM
- factory reset/wipe cache/wipe dalvik cache
- (test CM rom, put on some apps ect.)
- make nandroid backup of 4.4.2
- factory reset/wipe cache/wipe dalvik cache
- flash nandroid of 4.1.2
- factory reset/wipe cache/wipe dalvik cache
- reboot
- restore apps with titanium backup
Will this work?
Thanks everyone, any help is welcome
Click to expand...
Click to collapse
Restore BEFORE. No nid for AFTER.
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Yes you do have to worry about efs if you do not backup your efs you may have problems maybe not today or in a week or month but if you ever corrupt your efs by flashing roms and you do not have a backup you will have big problems!....First rule when flashing roms backup efs!
Second rule save a backup not on your phone .
JellyYogurt said:
Restore BEFORE. No nid for AFTER.
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Click to expand...
Click to collapse
So can you give me the right steps please? You can just edit my post in a quote or something, thanks
And like that I can perfectly switch between roms, right? No problems with efs (if it doesn't get corrupted by accident)?
UNDERSTAND FIRST
http://forum.xda-developers.com/showthread.php?t=2362743
Network IMEI EFS
http://forum.xda-developers.com/showthread.php?t=2393289
Downgrade and network problems .
http://forum.xda-developers.com/showthread.php?t=2531221
- make nandroid backup of 4.1.2
- factory reset/wipe cache/wipe dalvik cache
- flash CM
- (test CM rom, put on some apps ect.)
- make nandroid backup of 4.4.2
- factory reset/wipe cache/wipe dalvik cache
- flash nandroid of 4.1.2
- reboot
Dun nid to back up the apps since nandroids do back up them alr. Save the nandroids to ext sd card. Recommend 16 or 32 gb sd card for this. And backup efs to ext sd card too. IMPORTANT TO BACKUP EFS
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