Q - MH2 Roms , Does it change the efs? - Galaxy S III Q&A, Help & Troubleshooting

I flashed via odin the pana I9300UBEMH2 I9300UWHEMH1 . but when i went back to the stock one i have imei 0049 - I tough this could happen only with mg4 roms . i flashed the panama one and i got my signal and imei back. but im not sure of wich roms can i flash now
can u help me?

leboreiro said:
I flashed via odin the pana I9300UBEMH2 I9300UWHEMH1 . but when i went back to the stock one i have imei 0049 - I tough this could happen only with mg4 roms . i flashed the panama one and i got my signal and imei back. but im not sure of wich roms can i flash now
can u help me?
Click to expand...
Click to collapse
Please read general > Sticky roll-up thread / IMEI / EFS - Know this stuff.
Every ROM since July changes EFS. Why would only July ROMs do the upgrade then not August?

rootSU said:
Please read general > Sticky roll-up thread / IMEI / EFS - Know this stuff.
Every ROM since July changes EFS. Why would only July ROMs do the upgrade then not August?
Click to expand...
Click to collapse
i have just 2 or 3 simple questions. especific quesitons that i cannot find the answer on your post. or maybe the answer is on the next 11 pages? you mention on your post only MG4 roms or newer. don't say anything about Mh2 . so the questions is kinda easy, would i am able to have signal and imea read on a 4.1.2 if i flash a mg4 modem after install ? . and same thing happen to 4.2.2 or 4.3 will i have to always flash a custom modem to have my imea readden?

leboreiro said:
i have just 2 or 3 simple questions. especific quesitons that i cannot find the answer on your post. or maybe the answer is on the next 11 pages?
Click to expand...
Click to collapse
You have asked no questions that are not answered in post 1. I made post as easy as possible for all to understand. There is not much else I can do about it.

rootSU said:
You have asked no questions that are not answered in post 1. I made post as easy as possible for all to understand. There is not much else I can do about it.
Click to expand...
Click to collapse
I've got this fragment you wrote.
"If you have ever flashed XXEMG* (or newer) ROM, to keep your IMEI working, you must:
Stay with the EFS v2 basebands (MG* or newer). You may flash other ROMs but must return to the MG* (or newer) baseband
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
If the above don't work, consider sending for repair... "
SO i will have to back up and restore the mg4 mh2 efs every time i want to change rom for a older one.. do you know if 4.3 (as it will be obviosly new) will have a mg4 or mh2 mh1 modem? . im kinda having problems on my calls . internet and messanging are just fine . but some times when i want to call the automatic operator says " the call could not be proccesed" but dunno if this is a signal problem or it is just me.
does k tools back up v2 efs?

leboreiro said:
SO i will have to back up and restore the mg4 mh2 efs every time i want to change rom for a older one
Click to expand...
Click to collapse
From my thread:
rootSU said:
If you have ever flashed XXEMG* (or newer) ROM, to keep your IMEI working, you must:
Stay with the EFS v2 basebands (MG* or newer). You may flash other ROMs but must return to the MG* (or newer) baseband
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
If the above don't work, consider sending for repair...
Click to expand...
Click to collapse
leboreiro said:
do you know if 4.3 (as it will be obviosly new) will have a mg4 or mh2 mh1 modem?
Click to expand...
Click to collapse
How could we know? Why would we need to know? There are new modems coming out every month. 2 in July alone at least 1 in August
leboreiro said:
does k tools back up v2 efs?
Click to expand...
Click to collapse
Why would it not?

rootSU said:
From my thread:
How could we know? Why would we need to know? There are new modems coming out every month. 2 in July alone at least 1 in August
Why would it not?
Click to expand...
Click to collapse
thanks for your support u've been very helpful.

Related

Want to go back to stock, which ROM should I install?

I haven't found a custom ROM I've liked, so I want to go back to the stock Samsung ROM for my i9300 (UK).
Which should I download and flash to my phone? I9300XXEMG4?
I would, it's best BTU firmware to date
slaphead20 said:
I would, it's best BTU firmware to date
Click to expand...
Click to collapse
I had to Google "BTU". I believe it's a UK firmware variant.
The other UK firmware variants seem to be: "BTC, CPW, H3G, O2I, O2U, ORA, OXA*, TMU, TSC, VIR, VOD, XEU"
What's the difference between them all, and is BTU the one I want?
BTU is unbranded like from carphone warehouse as opposed to branded that you get direct from the carrier
please try to remember; questions go in the q&a section. General isn't for questions
Sent from my GT-I9300 using Tapatalk 4 Beta
Holy crap, I9300XXEMG4_I9300OXAEMG4_BTU.zip is 850 MB :| Talk about bloated
They're all that big. Fyi mg4 alters efs. Flash that and you cant use any other baseband
Sent from my GT-I9300 using Tapatalk 4 Beta
rootSU said:
They're all that big. Fyi mg4 alters efs. Flash that and you cant use any other baseband
Sent from my GT-I9300 using Tapatalk 4 Beta
Click to expand...
Click to collapse
I don't know what that means.
If you dont know what that means, you definitely shouldn't be flashing things!
I'm not sure how basic I need to be so i'll be as basic as I can.
The s3 has an efs partition. This is a partition on your internal memory that stores your imei number among other things
The imei number is mucho important. Without a working imei number, your phone cannot operate on a mobile network. In otherwords, your phone is nothing more than a miniature wifi tablet.
Every official rom comes with a baseband. This is also known as modem or radio. This is software and its responsible for connecting your phone's telephony Services via the radio hardware to the network.
Many rooted users change their baseband in the hope that they get better signal / battery life
Now here is the problem. The latest official 4.1.2 changes the format of the efs. The mg4 baseband "updates" efs. The baseband works fine and can read the imei and the phone can continue to operate on the network. However this new efs format is not backwards compatible. This means any older baseband (packaged with any rom other than mg4) cannot read imei, meaning you cannot connect to the network. At the moment, only the mg4 baseband can read the updates efs so once you flash this rom (and baseband) it is not possible to use any other baseband. If you flash any rom older than mg4, it will only connect if you then put the mg4 baseband back on.... unless you backed up efs before flashing mg4... in otherwords, once flashed mg4, unless you backed up efs, you can never go backwards with the baseband. Or rom....
Sent from my GT-I9300 using Tapatalk 4 Beta
rootSU said:
If you dont know what that means, you definitely shouldn't be flashing things!
I'm not sure how basic I need to be so i'll be as basic as I can.
The s3 has an efs partition. This is a partition on your internal memory that stores your imei number among other things
The imei number is mucho important. Without a working imei number, your phone cannot operate on a mobile network. In otherwords, your phone is nothing more than a miniature wifi tablet.
Every official rom comes with a baseband. This is also known as modem or radio. This is software and its responsible for connecting your phone's telephony Services via the radio hardware to the network.
Many rooted users change their baseband in the hope that they get better signal / battery life
Now here is the problem. The latest official 4.1.2 changes the format of the efs. The mg4 baseband "updates" efs. The baseband works fine and can read the imei and the phone can continue to operate on the network. However this new efs format is not backwards compatible. This means any older baseband (packaged with any rom other than mg4) cannot read imei, meaning you cannot connect to the network. At the moment, only the mg4 baseband can read the updates efs so once you flash this rom (and baseband) it is not possible to use any other baseband. If you flash any rom older than mg4, it will only connect if you then put the mg4 baseband back on.... unless you backed up efs before flashing mg4... in otherwords, once flashed mg4, unless you backed up efs, you can never go backwards with the baseband. Or rom....
Sent from my GT-I9300 using Tapatalk 4 Beta
Click to expand...
Click to collapse
To sum it up dont flash the newest uk rom.
Sent from my GT-I9300 using xda app-developers app
CHEVYbarracuda1 said:
To sum it up dont flash the newest uk rom.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Or even more summing it up...
"JUST... DONT!"
Or make sure to read a guide about flashing roms before you flash any rom. Especially about backing up your efs folder. A lot of the custom roms have options for doing that or do that automatically so chances are you may already have an efs backup, but better not risk it.
Well he could flash that rom but he has to back up his old efs first for getting safe.
But I do not think he is able to do that due to he is unknowing.
Hobbygamer27 said:
Well he could flash that rom but he has to back up his old efs first for getting safe.
But I do not think he is able to do that due to he is unknowing.
Click to expand...
Click to collapse
No one is explaining what is wrong with the one in I9300XXEMG4.
King Mustard said:
No one is explaining what is wrong with the one in I9300XXEMG4.
Click to expand...
Click to collapse
Wtf? I wrote a massive block of text a few posts back explaining EXACTLY what is wrong with it. Read it again!!!
Sent from my GT-I9300 using Tapatalk 4
King Mustard said:
No one is explaining what is wrong with the one in I9300XXEMG4.
Click to expand...
Click to collapse
Dude learn reading.
Flashing the BTU EMG4 Firmware will change your efs for ever, so if there is any bug or part in this firmware you do not like, the way for backflash will be complicated.
The old modems are not able to run with the new efs, so U have to flash the new modem on the older firmware.
Or you flash back your original efs back.
But this could be very dangerous because people are scared to do that.
Hobbygamer27 said:
Dude learn reading.
Flashing the BTU EMG4 Firmware will change your efs for ever, so if there is any bug or part in this firmware you do not like, the way for backflash will be complicated.
The old modems are not able to run with the new efs, so U have to flash the new modem on the older firmware.
Or you flash back your original efs back.
But this could be very dangerous because people are scared to do that.
Click to expand...
Click to collapse
Apologies.
So which is the latest "safest" stock ROM I should use?
King Mustard said:
Apologies.
So which is the latest "safest" stock ROM I should use?
Click to expand...
Click to collapse
Just instale a safe firmware. not MG4 AND MF6.... i am on XXEME2 ITS THE BEST.
MG4 is perfectly safe, it is a BTU firmware intended for the UK, it works extremely well and it is the users of this forum that don't know what they are doing that make it unsafe... It's as simple as that
danieldp1990 said:
Just instale a safe firmware. not MG4 AND MF6.... i am on XXEME2 ITS THE BEST.
Click to expand...
Click to collapse
I9300XXEME2 does not show up on a search for UK BTU on SamMobile, only I9300XXEMG4 (July 2013) and I9300XXEMB5 (February 2013).
slaphead20 said:
MG4 is perfectly safe, it is a BTU firmware intended for the UK, it works extremely well and it is the users of this forum that don't know what they are doing that make it unsafe... It's as simple as that
Click to expand...
Click to collapse
Does I9300XXEMG4 change much compared to the previous build??
King Mustard said:
I9300XXEME2 does not show up on a search for UK BTU on SamMobile, only I9300XXEMG4 (July 2013) and I9300XXEMB5 (February 2013).
Does I9300XXEMG4 change much compared to the previous build??
Click to expand...
Click to collapse
It have to be BTU? remember the BTU MG4 changes your imei for ever...... so its a risk to flash it. thats why i did not flash the MG4 and flash a earlier version not BTU XXEME2, its sooo nice..

[SOLVED][CM10.2Nightly] Stuck on Emergency Calls only

Hey Guys,
So I had my usual SIM card working as usual on G4 stock 4.1.2 firmware. I later on flashed CM10.2 20130814 Nightly build after which my phone was stuck on Emergency Calls only. I flashed three different stock 4.1.2 official firmwares after that but nothing seemed to fix it. They recognised my SIM and carrier though they weren't able to make calls and whenever I tried to it gave me the error message "Not registered on Network".
It is a fully unlocked i9300. I would really like your guys help on this.
Questions go in the Q&A forum, report your post and ask for it to be moved.
Does your IMEI number in phone match the one under the battery?
Did you make a backup of your efs folder like all the guides recommend?
If your IMEI has changed and you don't have a backup then flashing the latest full stock via odin on your pc sometimes enables the partition to be read again.
boomboomer said:
Questions go in the Q&A forum, report your post and ask for it to be moved.
Does your IMEI number in phone match the one under the battery?
Did you make a backup of your efs folder like all the guides recommend?
If your IMEI has changed and you don't have a backup then flashing the latest full stock via odin on your pc sometimes enables the partition to be read again.
Click to expand...
Click to collapse
Well, This is the Q&A section. Anyways, I didn't make a backup of EFS. I tried flashing stock as mentioned in the OP but it didn't prevail so what should be the next line of action? xD
Hah! Sorry, my browser took me back to q&a from general.
Does the IMEI match?
If not then you need a repair.
I am currently back to flashing another stock firmware so didn't check. If it doesn't match then what sort of repair would it need?
Taimur Akmal said:
Well, This is the Q&A section. Anyways, I didn't make a backup of EFS. I tried flashing stock as mentioned in the OP but it didn't prevail so what should be the next line of action? xD
Click to expand...
Click to collapse
Nothing much.
Refer this http://forum.xda-developers.com/showthread.php?t=2393289...
sent from the state where marijuana is NOT illegal !
chris_marsh said:
Nothing much.
Refer this http://forum.xda-developers.com/showthread.php?t=2393289...
sent from the state where marijuana is NOT illegal !
Click to expand...
Click to collapse
Thanks for the header.
For anyone who finds this thread.
Problem: /efs partition format changed
The latest 4.1.2 UK (XXEMG4) and India (XXEMG5) ROM releases (Which come with MG4 and MG2 basebands respectively), actually change the format of efs.
If you have flashed a, XXEMG4/5 ROM at any point, you are now in a situation whereby only an MG4/2 baseband can read the IMEI in /efs. The new efs format is not backwards compatible with older basebands. Probably, all new basebands will be compatible so in time this issue should diminish I expect.
If you have ever flashed XXEMG4/5 ROM, to keep your IMEI working, you must:
Stay with the basebands MG4/2. You may flash other ROMs but must return to the MG4/2 baseband.
Restore your efs backup (taken before XXEMG4/5 ROM install) to use older basebands.
Please note, it is flashing the ROM that alters efs format, not the basebands themselves. You can flash the MG4 or 2 baseband safely on their own and return to an older baseband without issue.
You can download an MG2/4 baseband package HERE
Aroma installer, choose between MG2 and MG4 basebands
Basebands alone do not alter efs format
Backs up EFS in an uncompressed format (Use Root Explorer to restore)
Does NOT include RIL, works on AOSP and Sammy
Source: http://forum.xda-developers.com/showthread.php?t=2393289 Super Thanks to chris_marsh and rootSU.
Moderator---- Close this thread------
Taimur Akmal said:
Thanks for the header.
For anyone who finds this thread.
Problem: /efs partition format changed
The latest 4.1.2 UK (XXEMG4) and India (XXEMG5) ROM releases (Which come with MG4 and MG2 basebands respectively), actually change the format of efs.
If you have flashed a, XXEMG4/5 ROM at any point, you are now in a situation whereby only an MG4/2 baseband can read the IMEI in /efs. The new efs format is not backwards compatible with older basebands. Probably, all new basebands will be compatible so in time this issue should diminish I expect.
If you have ever flashed XXEMG4/5 ROM, to keep your IMEI working, you must:
Stay with the basebands MG4/2. You may flash other ROMs but must return to the MG4/2 baseband.
Restore your efs backup (taken before XXEMG4/5 ROM install) to use older basebands.
Please note, it is flashing the ROM that alters efs format, not the basebands themselves. You can flash the MG4 or 2 baseband safely on their own and return to an older baseband without issue.
You can download an MG2/4 baseband package HERE
Aroma installer, choose between MG2 and MG4 basebands
Basebands alone do not alter efs format
Backs up EFS in an uncompressed format (Use Root Explorer to restore)
Does NOT include RIL, works on AOSP and Sammy
Source: http://forum.xda-developers.com/showthread.php?t=2393289 Super Thanks to chris_marsh and rootSU.
Moderator---- Close this thread------
Click to expand...
Click to collapse
In Same Situation.. is there any solution??? your given link not working any more.
UrduGeek said:
In Same Situation.. is there any solution??? your given link not working any more.
Click to expand...
Click to collapse
Try installing the latest Galaxy S3 official firmware. It should fix it.
Taimur Akmal said:
Try installing the latest Galaxy S3 official firmware. It should fix it.
Click to expand...
Click to collapse
NO it didn't work as i installed the latest firmware through odin, and then get OTA as well but it didnt solve the issue, then i installed the MK6 BTU firmware but it didnt work as well.
tired of installing the ROM's and Patches but non of them worked, is there any posibility to get it in working condition or should i use it as IPOD???
Take it to a repair centre and pay them to recode it, make sure it works on 4.3 firmware before you pay them.
Patches are a work around for modified efs problems, a corrupt or wiped efs can only be solved by professional repair.

How to downgrade 4.2.2>4.1.2 safely?

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.

(Q) Modem Flashing

Hi guys , so i was having some problems with calls on my gs3 , (i was sending sms and atuff normally, but from yesterday till today i could make calls in the morning, i tried my moms phone and the carrier signas and status seems ok. so i tough it was a modem problem, i flashed "I9300UBEMH2_I9300UBEMH1_I9300UWHEMH1_HOME.tar.md5" from panama and the signal was OK . so i tried to reflash another modem and i got the "no sim card" error. tried a bunch of modems and none of them worked.
So now im flashing the stock one, but as far as i know it wont read my imei because of the panama was MG4 or MH1 it changed the efs format. But i will flash a mg4 modem with the stuck UBELL1 from movistar southamerica and see if it works .
My problem here is , can i flash an mg4 rom make a back up of the efs with ktools and restore the efs backup on a previous not mg4 rom? and it will read my emai ? (this is happening because i didn't made a back up of my original efs)
Also i was wondering, what will happen when i want to install a 4.2.2 again in the future? or a 4.3? i won't be able to do it since i need to use a mg4 modem to have signal? or can i back up a working efs with a mg4 rom and restore the efs back up on a stock not mg4?
#BTW my sg3 is still attached to movistar (is not unlocked)
leboreiro said:
Hi guys , so i was having some problems with calls on my gs3 , (i was sending sms and atuff normally, but from yesterday till today i could make calls in the morning, i tried my moms phone and the carrier signas and status seems ok. so i tough it was a modem problem, i flashed "I9300UBEMH2_I9300UBEMH1_I9300UWHEMH1_HOME.tar.md5" from panama and the signal was OK . so i tried to reflash another modem and i got the "no sim card" error. tried a bunch of modems and none of them worked.
So now im flashing the stock one, but as far as i know it wont read my imei because of the panama was MG4 or MH1 it changed the efs format. But i will flash a mg4 modem with the stuck UBELL1 from movistar southamerica and see if it works .
My problem here is , can i flash an mg4 rom make a back up of the efs with ktools and restore the efs backup on a previous not mg4 rom? and it will read my emai ? (this is happening because i didn't made a back up of my original efs)
Also i was wondering, what will happen when i want to install a 4.2.2 again in the future? or a 4.3? i won't be able to do it since i need to use a mg4 modem to have signal? or can i back up a working efs with a mg4 rom and restore the efs back up on a stock not mg4?
#BTW my sg3 is still attached to movistar (is not unlocked)
Click to expand...
Click to collapse
Please just read General > Sticky roll-up > IMEI / EFS - Know this stuff.
Everything you have asked is answered there
rootSU said:
Please just read General > Sticky roll-up > IMEI / EFS - Know this stuff.
Everything you have asked is answered there
Click to expand...
Click to collapse
I already did , but there are some questions here like the one where if i can restore a mh2 or mg4 efs backup to a stock not mg4 or mh2 .
and what would happen when i want to install 4.3 on october , or even a 4.2.2
leboreiro said:
I already did , but there are some questions here like the one where if i can restore a mh2 or mg4 efs backup to a stock not mg4 or mh2 .
Click to expand...
Click to collapse
This question doesn't make sense.
leboreiro said:
and what would happen when i want to install 4.3 on october , or even a 4.2.2
Click to expand...
Click to collapse
This is already answered in the thread you said you read.
today i had some idea. But not im not sure about it . So here it is. I am wondering if its completely necesary to use mg4 modems forever on my device to get my imei readen. So is there any kind of method to take the v2 imei readen only for mg4 modems . and make it readable for another basebands modems? like ubell1 ? . i tried installing a 4.2.2 rom, then flashing the mg4 modem. once the imei got readen i made a efs backup with HCk tool , then i change rom and restore the mg4 efs backup . But i got nothing . the imei is not being read.
do you know if what im trying to do is possible? or maybe (as i said before) i will have to forever use mg4 modems on my device? .
with mg4 modems im not having problems is just that , it's a pain in the ass being changing of basebands everytime i want to flash a new rom.
You can only use mg2, mg4 or mh1. Basically any modem released since July. Stop living in the past
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I do NOT reply to support queries over PM. Please keep support queries to the Q&A section, so that others may benefit
Or best stop using Rom that force baseband install.

after upgrading to 4.3 bsed rom

after flashing 4.3 baeds rom and failed to start..i managed to flash new firmware 4.1.2 with odin..but after starting up..my phone doesnt have network(not registerd network) and my serial written like that 00004400****.. then trying to do a full wipe and re-flashed the firmware again..also no network...how can i fix that plz ????
zeyadrani said:
after flashing 4.3 baeds rom and failed to start..i managed to flash new firmware 4.1.2 with odin..but after starting up..my phone doesnt have network(not registerd network) and my serial written like that 00004400****.. then trying to do a full wipe and re-flashed the firmware again..also no network...how can i fix that plz ????
Click to expand...
Click to collapse
please read the stickies in general sections and search first, I think half of the >1000 threads here in Q&A section are filled with the same question
http://forum.xda-developers.com/showthread.php?t=2393289
I hope you have an efs backup. if not follow the steps in the linked thread.
btw which 4.1.2 did you flash. when you flash 4.3 rom efs will change to v2 so you need a rom with efs v2 baseband (everything newer than xeemg4)
zeyadrani said:
after flashing 4.3 baeds rom and failed to start..i managed to flash new firmware 4.1.2 with odin..but after starting up..my phone doesnt have network(not registerd network) and my serial written like that 00004400****.. then trying to do a full wipe and re-flashed the firmware again..also no network...how can i fix that plz ????
Click to expand...
Click to collapse
Read this post 1441: http://forum.xda-developers.com/showthread.php?p=48578725#post48578725
It works for me.
Darkened_Sky said:
please read the stickies in general sections and search first, I think half of the >1000 threads here in Q&A section are filled with the same question
http://forum.xda-developers.com/showthread.php?t=2393289
I hope you have an efs backup. if not follow the steps in the linked thread.
btw which 4.1.2 did you flash. when you flash 4.3 rom efs will change to v2 so you need a rom with efs v2 baseband (everything newer than xeemg4)
Click to expand...
Click to collapse
i flashed stock firmware 4.1.2
zeyadrani said:
i flashed stock firmware 4.1.2
Click to expand...
Click to collapse
yeah I know but which one (the build number) something like XXELLA or XXEMG4...? you can see it in settings menu
in fact if you have flashed a firmware older than XXEMG4 then also its baseband is flashed, and these old basebands are not compatible with efs v2 which has been flashed through your sammy 4.3 update.
This could PROBABLY have caused your imei problem and you would only have to flash a baseband newer than XXEMG4 to PROBABLY solve it. or your efs is corrupt than you should follow the steps in the stickies
Darkened_Sky said:
yeah I know but which one (the build number) something like XXELLA or XXEMG4...? you can see it in settings menu
in fact if you have flashed a firmware older than XXEMG4 then also its baseband is flashed, and these old basebands are not compatible with efs v2 which has been flashed through your sammy 4.3 update.
This could PROBABLY have caused your imei problem and you would only have to flash a baseband newer than XXEMG4 to PROBABLY solve it. or your efs is corrupt than you should follow the steps in the stickies
Click to expand...
Click to collapse
U dun have to flash a modem NEWER than xxemg4. U nid to flash xxemg4 modem and its okay alr. Mg4 modem will work.
Sent from my GT-I9300 using xda app-developers app
Give a thank if I helped you
Darkened_Sky said:
yeah I know but which one (the build number) something like XXELLA or XXEMG4...? you can see it in settings menu
in fact if you have flashed a firmware older than XXEMG4 then also its baseband is flashed, and these old basebands are not compatible with efs v2 which has been flashed through your sammy 4.3 update.
This could PROBABLY have caused your imei problem and you would only have to flash a baseband newer than XXEMG4 to PROBABLY solve it. or your efs is corrupt than you should follow the steps in the stickies
Click to expand...
Click to collapse
will it work if i flashed XXELLA then restored my efs ?!!
zeyadrani said:
will it work if i flashed XXELLA then restored my efs ?!!
Click to expand...
Click to collapse
so the firmware you have flashed is XXELLA?
and do you have an efs backup or not? (sorry I do not really understand your sentence)
Thaaaaaanks I have solved that....my imiel and sn is back
Sent from my GT-I9300 using xda premium

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