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...
Sent from my GT-I9300 using xda app-developers app
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
Related
Hello to all,
i have problem of heating and i want to flash a specific modem that seems to be perfect combo with my operator in my country but i have flashed latest omega.
Now i have DDEMG2 modem and XXEMG5 build.
I have read about EFS problems so, before flashing these new types of firmware i have hade a backup of my EFS with EFS_Professional_2.0.62 so i know that i can downgrade modem having my actual rom but.... HOW?
I don't want have any type of poblem so i'm asking for a simple "how to" to make all procedure correctly.
I need to downgrade since i have problem of heating under 3g connection and seems that with specific modem my situation in this sense will be better.
Can anyone help me?
Turn off 3g from build prop.
For downgrading u cn reflash ur current rom
Or its lower or base version.
Post d results.
Hit thanks if I helped u..
A click for u but rep for me.
Sent from my LT26i using xda premium
ADDICT.ANK said:
Turn off 3g from build prop.
For downgrading u cn reflash ur current rom
Or its lower or base version.
Post d results.
Hit thanks if I helped u..
A click for u but rep for me.
Sent from my LT26i using xda premium
Click to expand...
Click to collapse
Sorry i haven't understand.
I want only flash a different modem. How can I do it without problems on efs folder?
What about 3g and build.prop?
From universe with my gs3
U would probably hv toggle for2g n 3g
Leave d build prop fr later.
Extract modem file from the rom package i.e. Tar.
And add in the rom u wnt to
Hit thanks if I helped u..
A click for u but rep for me.
Sent from my LT26i using xda premium
Modem flash should not damage EFS .
jje
JJEgan said:
Modem flash should not damage EFS .
jje
Click to expand...
Click to collapse
Probably should not but dont take the risk backup your data and rom
and imp especially imei and simlock backup ur efs....As it can come handy anytime......just to get out from debranding o losing ur imei....
Checkout the thread and backup ur imei efs data first.....
http://forum.xda-developers.com/showthread.php?t=2145464
ADDICT.ANK said:
Probably should not but dont take the risk backup your data and rom
and imp especially imei and simlock backup ur efs....As it can come handy anytime......just to get out from debranding o losing ur imei....
Checkout the thread and backup ur imei efs data first.....
http://forum.xda-developers.com/showthread.php?t=2145464
Click to expand...
Click to collapse
Preaching to the choir there.... JJE knows full well about EFS backups. He and I answer 10 threads a day on this subject.
Thats why I wrote the thread in my signature
rootSU said:
Preaching to the choir there.... JJE knows full well about EFS backups. He and I answer 10 threads a day on this subject.
Thats why I wrote the thread in my signature
Click to expand...
Click to collapse
So in order to flash my preferite modem without problem I have to
-restore backup of efs before the new format
-flash my preferite modem
Right?
From universe with my gs3
Is your efs in new format? Mg4 is but mg5 is older changelog so not sure that it changes format
Sent from my GT-I9300 using Tapatalk 4
rootSU said:
Is your efs in new format? Mg4 is but mg5 is older changelog so not sure that it changes format
Sent from my GT-I9300 using Tapatalk 4
Click to expand...
Click to collapse
Now I'm on mg5 but I have also flashed before mg4.
How we can check the format?
From universe with my gs3
If you went from mg4 to mg5 without restoring efs, it should be same format for both. So yes, flash your modem of choice and restore pre mg4 efs backup
Sent from my GT-I9300 using Tapatalk 4
rootSU said:
If you went from mg4 to mg5 without restoring efs, it should be same format for both. So yes, flash your modem of choice and restore pre mg4 efs backup
Sent from my GT-I9300 using Tapatalk 4
Click to expand...
Click to collapse
So i have to go in recovery then flash modem then flash efs backup before reboot?
If somenthing goes wrong....i can restore original no rooted and stock firmware and start with a "new" phone?
rootSU said:
Preaching to the choir there.... JJE knows full well about EFS backups. He and I answer 10 threads a day on this subject.
Thats why I wrote the thread in my signature
Click to expand...
Click to collapse
NOT PREACHING
just helping gave the thread in order too avoid confusion
And about flashing yes....but u'll not lose ur imp stuff i.e. imei...u'll be in stock but do backup your efs pls
Nice working with you though...
keep posted
So what I have to do guys?
From universe with my gs3
A solution
mattiadj said:
So what I have to do guys?
From universe with my gs3
Click to expand...
Click to collapse
Made a backup of ur imei ??
If then proceed
Flash the modem of our choice and restore or flash ur efs backup before rebooting....
and damn ur done.... :highfive: :victory:
And post the results here pls they worth a lot... :good:
ADDICT.ANK said:
Made a backup of ur imei ??
If then proceed
Flash the modem of our choice and restore or flash ur efs backup before rebooting....
and damn ur done.... :highfive: :victory:
And post the results here pls they worth a lot... :good:
Click to expand...
Click to collapse
I have a backup of the situation before the change of efs folder. I have to restore it after flashing modem?
From universe with my gs3
mattiadj said:
I have a backup of the situation before the change of efs folder. I have to restore it after flashing modem?
From universe with my gs3
Click to expand...
Click to collapse
Great good luck and proceed
And keep posted
:highfive:
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
Sent from my GT-I9300 using xda premium
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
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
Sent from my GT-I9300 using Tapatalk 4
I have the exact problem, and am stuck with omega 4.1.2 for weeks now !
Sent from my GT-I9300 using xda premium
See above
Sent from my GT-I9300 using Tapatalk 4
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 !
Sent from my GT-I9300 using xda premium
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
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.
Sent from my GT-I9300 using Tapatalk
boomboomer said:
Direct opinion is read the efs 'know this stuff' sticky -tells you everything you need to know.
Sent from my GT-I9300 using Tapatalk
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
Sent from my GT-I9300 using Tapatalk
boomboomer said:
XXEMG4 or later, any baseband/firmware after this will work with efs v2
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
Thank You!