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?
Sent from my SM-N9005 using xda app-developers app
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.
Sent from my GT-I9300 using XDA Premium 4 mobile app
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
Sent from my GT-I9300 using xda app-developers app
JellyYogurt said:
No. Modems have a number at the last. Like MG4. Etc
Sent from my GT-I9300 using xda app-developers app
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.
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
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.
Sent from my GT-I9300 using xda app-developers app
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.
Sent from my GT-I9300 using xda app-developers app
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.
Sent from my GT-I9300 using xda app-developers app
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
Sent from my SM-N9005 using xda app-developers app
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
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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:
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
Hi Guys,
i was running with temasek's CM for a long time now.
Then i wanted to try out the Omega ROM and installed it. With this install i bricked my EFS partition. I had many tar.gz backups, so i restored it.
(Just unpacked it to /efs with a root explorer. After that i had to change "OFF" to "ON" in /efs/FactoyApps/Factorymode and it worked with the Stock Rom (flashed with Odin).
No Generic IMEI and i was able to phone someone.
But however, when i want to install ANY custom rom, i cant unlock my Simcard! I type in my Pin, but it wont unlock. The Pin-Screen wont go away.
Why? With Stockfrom (via Odin) it works without any problem.
what baseband in CM rom it was?
chuchusweet said:
what baseband in CM rom it was?
Click to expand...
Click to collapse
Hmm, dont know. I tryed many different Roms.
When i flash the latest 4.3 CM it does not work. Neither with Paranoid. When i try to flash Omega, my EFS bricks again Oo
Mikey94 said:
Hmm, dont know. I tryed many different Roms.
When i flash the latest 4.3 CM it does not work. Neither with Paranoid. When i try to flash Omega, my EFS bricks again Oo
Click to expand...
Click to collapse
have you read the IMEI sticky thread in General > Sticky roll-up? If not, please do.
Omega bricks nothing. It is an EFS upgrade. Please read about it.
Mikey94 said:
Hi Guys,
i was running with temasek's CM for a long time now.
Then i wanted to try out the Omega ROM and installed it. With this install i bricked my EFS partition. I had many tar.gz backups, so i restored it.
(Just unpacked it to /efs with a root explorer. After that i had to change "OFF" to "ON" in /efs/FactoyApps/Factorymode and it worked with the Stock Rom (flashed with Odin).
No Generic IMEI and i was able to phone someone.
But however, when i want to install ANY custom rom, i cant unlock my Simcard! I type in my Pin, but it wont unlock. The Pin-Screen wont go away.
Why? With Stockfrom (via Odin) it works without any problem.
Click to expand...
Click to collapse
try PATCHED EMG4 MODEM
chuchusweet said:
try PATCHED EMG4 MODEM
Click to expand...
Click to collapse
No No No No NO!!! You don't know what this patched modem does so please do not recommend people use it.
rootSU said:
No No No No NO!!! You don't know what this patched modem does so please do not recommend people use it.
Click to expand...
Click to collapse
sorry sorry
chuchusweet said:
sorry sorry
Click to expand...
Click to collapse
It might not be a bad idea since mg4 changes efs format and might solve is problem in worst ill have to back and restore efs
Sent From My Galaxy S III Using XDA Premium 4
Ver3go said:
It might not be a bad idea since mg4 changes efs format and might solve is problem in worst ill have to back and restore efs
Sent From My Galaxy S III Using XDA Premium 4
Click to expand...
Click to collapse
NO!!!!
The Patched MG4 Modem is ONLY for people with Serial Number 0000000000000 who can no longer use Ariza patch! If your serial number is correct, do not use the patched modem.
rootSU said:
NO!!!!
The Patched MG4 Modem is ONLY for people with Serial Number 0000000000000 who can no longer use Ariza patch! If your serial number is correct, do not use the patched modem.
Click to expand...
Click to collapse
Not the patched one mate the regular one
Sent From My Galaxy S III Using XDA Premium 4
Ver3go said:
Not the patched one mate the regular one
Sent From My Galaxy S III Using XDA Premium 4
Click to expand...
Click to collapse
OK, so you quoted someone recommending using the patched one and said its "not a bad idea". Perhaps you should edit your post so it doesnt look like you're agreeing?
Ver3go said:
Not the patched one mate the regular one
Sent From My Galaxy S III Using XDA Premium 4
Click to expand...
Click to collapse
My Sn is 0000000 but this patched version not working
Mikey94 said:
Hi Guys,
i was running with temasek's CM for a long time now.
Then i wanted to try out the Omega ROM and installed it. With this install i bricked my EFS partition. I had many tar.gz backups, so i restored it.
(Just unpacked it to /efs with a root explorer. After that i had to change "OFF" to "ON" in /efs/FactoyApps/Factorymode and it worked with the Stock Rom (flashed with Odin).
No Generic IMEI and i was able to phone someone.
But however, when i want to install ANY custom rom, i cant unlock my Simcard! I type in my Pin, but it wont unlock. The Pin-Screen wont go away.
Why? With Stockfrom (via Odin) it works without any problem.
Click to expand...
Click to collapse
So have u found out any solution?
Sent From My Galaxy S III Using XDA Premium 4
I want to test custom roms for my galaxy s3 which has the latest version of Android 4.1.2 which happens to be xxemg4 if I recall correctly with xxemg3 modem since it is greek version. My question is: can I simply flash a rom that is the same android version as mine (4.1.2)?
Also , when I get to flash a rom, apart from my apps, cache, and dalvik cache is anything else wiped?
Sent from my new galaxy s3 (Oh yeaaah)
Mokiwipeout said:
I want to test custom roms for my galaxy s3 which has the latest version of Android 4.1.2 which happens to be xxemg4 if I recall correctly with xxemg3 modem since it is greek version. My question is: can I simply flash a rom that is the same android version as mine (4.1.2)?
Also , when I get to flash a rom, apart from my apps, cache, and dalvik cache is anything else wiped?
Sent from my new galaxy s3 (Oh yeaaah)
Click to expand...
Click to collapse
Read all
http://forum.xda-developers.com/showthread.php?t=2148708
I think u lost me... What I am asking is if for example I want to use a rom which in the title has the firmware xxemc2 while I have xxemg4 which are both android 4.1.2 is there any problem? Also, I couldn't find any answer to the second question
Sent from my new galaxy s3 (Oh yeaaah)
Mokiwipeout said:
I think u lost me... What I am asking is if for example I want to use a rom which in the title has the firmware xxemc2 while I have xxemg4 which are both android 4.1.2 is there any problem? Also, I couldn't find any answer to the second question
Sent from my new galaxy s3 (Oh yeaaah)
Click to expand...
Click to collapse
There is no problem.
Sent from my GT-I9300 using xda app-developers app
Give a thank if I helped you
Thanks man, could you tell me what else apart from data, cache and dalvik cache is wiped when installing roms?
Sent from my new galaxy s3 (Oh yeaaah)
Mokiwipeout said:
Thanks man, could you tell me what else apart from data, cache and dalvik cache is wiped when installing roms?
Sent from my new galaxy s3 (Oh yeaaah)
Click to expand...
Click to collapse
System. Which is ur current rom lol.
Sent from my GT-I9300 using xda app-developers app
Give a thank if I helped you
Mokiwipeout said:
I think u lost me... What I am asking is if for example I want to use a rom which in the title has the firmware xxemc2 while I have xxemg4 which are both android 4.1.2 is there any problem? Also, I couldn't find any answer to the second question
Sent from my new galaxy s3 (Oh yeaaah)
Click to expand...
Click to collapse
EMC2 is v1 efs, EMG4 is v2. You cannot go back from v2 to v1 without a backup of your efs folder, made before you upgraded.
Flashing EMC2 will result in default imei and no service.
boomboomer said:
EMC2 is v1 efs, EMG4 is v2. You cannot go back from v2 to v1 without a backup of your efs folder, made before you upgraded.
Flashing EMC2 will result in default imei and no service.
Click to expand...
Click to collapse
His is mg3. And efs is only upgraded when u go to 4.3
Edit: He is right. MG4 does upgrade ur efs.
Sent from my GT-I9300 using xda app-developers app
Give a thank if I helped you
Hello
My friend bought GS3 months ago in Arabic country with ICS 4.0.4 installed. When I saw the box, I found that the GS3 is a grey market product. It has Region Lock label written in Russian language on the box and the ROM is pre-rooted CWM Custom ROM
Now, Kies dose not upgrade this version and he wishes to have Arabic stock ROM 4.3 if possible. What are the safest steps to do?
- If I download and flash Arabic stock ROM, will I loose modem connectivity?
- Do I need to backup and restore EFS data if I flash stock ROM?
- Do I need root to restore EFS data/modem driver after flashing STOCK ROM?
- Should I flash custom ROM instead of Stock ROM?
I want a safe way, I don't wish to cause network/EFS loss to the device?
I read a lot but came to no conclusion.. please help
Hello
My friend bought GS3 months ago in Arabic country with ICS 4.0.4 installed. When I saw the box, I found that the GS3 is a grey market product. It has Region Lock label written in Russian language on the box and the ROM is pre-rooted CWM Custom ROM
Now, Kies dose not upgrade this version and he wishes to have Arabic stock ROM 4.3 if possible. What are the safest steps to do?
- If I download and flash Arabic stock ROM, will I loose modem connectivity?
- Do I need to backup and restore EFS data if I flash stock ROM?
- Do I need root to restore EFS data/modem driver after flashing STOCK ROM?
- Should I flash custom ROM instead of Stock ROM?
I want a safe way, I don't wish to cause network/EFS loss to the device?
I read a lot but came to no conclusion.. please help
Click to expand...
Click to collapse
Kies shld have an emergency firmware feature. Try using it.
1. U will not. Just dun downgrade
2. If u aren't gg back to 4.1.2, dun bother. But recommended.
3. Yes.
4. Ur choice. If u wan bugless rom, go for stock rom. Many also say stock is one of the best.
Sent from my GT-I9300 using xda app-developers app
JellyYogurt said:
Kies shld have an emergency firmware feature. Try using it.
1. U will not. Just dun downgrade
2. If u aren't gg back to 4.1.2, dun bother. But recommended.
3. Yes.
4. Ur choice. If u wan bugless rom, go for stock rom. Many also say stock is one of the best.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Thanks for reply. I read that some people lost the IMEI when they flashed STOCK ROM 4.3? as I said the device came from Russian market and I want to flash Middle east ROM?
Which JB version is save to flash and won't loose the IMEI?
xIndex said:
Thanks for reply. I read that some people lost the IMEI when they flashed STOCK ROM 4.3? as I said the device came from Russian market and I want to flash Middle east ROM?
Which JB version is save to flash and won't loose the IMEI?
Click to expand...
Click to collapse
If u are rly just tat scared to lose ur imei. Go kies and do the firmware recovery. U will get stock rom automatically.
Sent from my GT-I9300 using xda app-developers app
Depends on the phone history on what will happen on upgrade to 4.3, sim lock may return or imei lost due to patched efs folder. No way to know until you get flash, so backup efs now.
4.1.2 EMG4 is when efs format changed, anything before this shouldn't cause too many issues.
Sent from my GT-I9300 using Tapatalk
boomboomer said:
Depends on the phone history on what will happen on upgrade to 4.3, sim lock may return or imei lost due to patched efs folder. No way to know until you get flash, so backup efs now.
4.1.2 EMG4 is when efs format changed, anything before this shouldn't cause too many issues.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
That's what I am worried about. To loose IMEI or get the region lock back. The phone model is GT-I9300RWDEUR. Can I find stock rom for it with no region lock?
so confusing !!
JellyYogurt said:
If u are rly just tat scared to lose ur imei. Go kies and do the firmware recovery. U will get stock rom automatically.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
I am worried I will get back the region lock crap if I do firmware recovery!!
The model is GT-I9300RWDEUR European SIM model
The ICS 4.0.0 is causing to many problems and device hangs all the time
Actually it is from Greece. I was confused with the language (Ελβετία= Swiss)
boomboomer said:
Depends on the phone history on what will happen on upgrade to 4.3, sim lock may return or imei lost due to patched efs folder. No way to know until you get flash, so backup efs now.
4.1.2 EMG4 is when efs format changed, anything before this shouldn't cause too many issues.
Sent from my GT-I9300 using Tapatalk
Click to expand...
Click to collapse
So if I upgrade to 4.1.2 before EMG4 , I won't have EFS/IMEI problem?
All I have to do to flash midle east ROM and then to find the Modem driver and install it through odin?
xIndex said:
So if I upgrade to 4.1.2 before EMG4 , I won't have EFS/IMEI problem?
All I have to do to flash midle east ROM and then to find the Modem driver and install it through odin?
Click to expand...
Click to collapse
Modem may be a CWM zip not a tar .
JJEgan said:
Modem may be a CWM zip not a tar .
Click to expand...
Click to collapse
What is the difference? Odin only flashes tar?
I need to find modem driver in tar format first?
Odin flashes tar
CWM and other custom recovery flashes zips .
Suggest you read the basic faqs and guides first .
STICKYS
http://forum.xda-developers.com/showthread.php?t=2344125
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
Thanks for the info.
I found UAE ROM that uses the same Greece Modem number. Is it safe to flash it?
http://www.sammobile.com/firmwares/3/?download=25063
http://www.sammobile.com/firmwares/3/?download=23767