No network connection after custom ROM install - Galaxy S III Q&A, Help & Troubleshooting

Hi,
I was trying some different ROM's on my i9300 (UK 3 network) and had various problems with all of them but eventually decided to stick with Omega v46.1 Jelly Bean 4.2.2. All seemed to be good last night in the house but today I can't connect to the network (wifi works fine). I tried restoring a backup and re-flashing to stock (using Odin) but I still can't connect to the network.
Thoughts?
Graham

Apn correct? Does the imei match the sticker?
What was the last rom you had that could connect
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rootSU said:
Apn correct? Does the imei match the sticker?
What was the last rom you had that could connect
Sent from my GT-I9300 using Tapatalk 4
Click to expand...
Click to collapse
Hi,
APN is correct.
The IMEI has changed!
Pradus HD XV
Graham

Ok. I believe pardus uses XXEMG4 as a base? Could you check that please?
If so read the imei / efs thread linked in my signature
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rootSU said:
Ok. I believe pardus uses XXEMG4 as a base? Could you check that please?
If so read the imei / efs thread linked in my signature
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Click to expand...
Click to collapse
I will have a look...thanks.
My imei number begins with 0049....................this is what comes of mucking about with things I have very little knowledge off

gmac00 said:
I will have a look...thanks.
My imei number begins with 0049....................this is what comes of mucking about with things I have very little knowledge off
Click to expand...
Click to collapse
And yes Pradus does use XXEMG4
Given I don't have a backup of my /efs what are my options?

As per the thread, you have 2 options.
1) go back to pardus
2) locate an mg4 baseband and flash it
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All fixed...thanks for the help!
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Related

Galaxy S3 I9300 Wrong IMEI Help!

Hello i bricked my phone, i have i9300 s3 mobile, and i flashed the Pardis HD Rom S4 Edition, i did everything okay, but i didn't backuped my EFS folder, and now i got no network and wrong imei in my phone is there any way to get Imei back? Thanks in advance
sprajo said:
Hello i bricked my phone, i have i9300 s3 mobile, and i flashed the Pardis HD Rom S4 Edition, i did everything okay, but i didn't backuped my EFS folder, and now i got no network and wrong imei in my phone is there any way to get Imei back? Thanks in advance
Click to expand...
Click to collapse
Did you have EMG4 at any point?
edit > Pardus is EMG4,
Have you still got the MG4 baseband?
rootSU said:
Did you have EMG4 at any point?
edit > Pardus is EMG4,
Have you still got the MG4 baseband?
Click to expand...
Click to collapse
Baseband is ARIZA_V (0.4)
sprajo said:
Baseband is ARIZA_V (0.4)
Click to expand...
Click to collapse
Baseband = modem = radio.
it MUST be MG4 on an MG4 ROM. Pardus comes with MG4 baseband. Did you flash another?
Ariza is not a baseband :/
rootSU said:
Baseband = modem = radio.
it MUST be MG4 on an MG4 ROM. Pardus comes with MG4 baseband. Did you flash another?
Ariza is not a baseband :/
Click to expand...
Click to collapse
I just flashed new stock 4.1.2 rom and its still the same my imei is wrong one and i have no network
Have you try to flash use Kies?
Sent from my Lenovo S820_ROW using xda app-developers app
sprajo said:
I just flashed new stock 4.1.2 rom and its still the same my imei is wrong one and i have no network
Click to expand...
Click to collapse
Be explicit please. Was it mg4?
If it was mg4, you need to send for repair
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rootSU said:
Be explicit please. Was it mg4?
If it was mg4, you need to send for repair
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Click to expand...
Click to collapse
I don't know was it mg4 I buyed the phone couple days ago, and then i flashed leaked 4.2.2 firmware, then i installed pardus rom then i noticed no network, and when i look at my IMEI 0049 first 4 numbers
The thing is mg4 baseband changes format of efs folder. Pardus is mg4. So now there are 2 choices...
1) restore efs (not option you said)
2) ensure you have mg4 baseband.
Once you have flashed mg4, mg4 is the only baseband that can read efs (and in turn - imei).
So make sure you have mg4 baseband
If you do have mg4 baseband already and imei still gone, you need to send for repair
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rootSU said:
The thing is mg4 baseband changes format of efs folder. Pardus is mg4. So now there are 2 choices...
1) restore efs (not option you said)
2) ensure you have mg4 baseband.
Once you have flashed mg4, mg4 is the only baseband that can read efs (and in turn - imei).
So make sure you have mg4 baseband
If you do have mg4 baseband already and imei still gone, you need to send for repair
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Click to expand...
Click to collapse
Mate where can i check if i have mg4 baseband?
i restored it to stock rom baseband version is I9300XXEMC2
Seriously? Settings > about phone
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rootSU said:
Seriously? Settings > about phone
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Click to expand...
Click to collapse
i restored it to stock rom baseband version is I9300XXEMC2
Like I've already said, only baseband mg4 can read your imei now!
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rootSU said:
Like I've already said, only baseband mg4 can read your imei now!
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Click to expand...
Click to collapse
Do you have link to download mg4 baseband? or rom with that baseband,
I don't. The official rom is on sammobile.com
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rootSU said:
I don't. The official rom is on sammobile.com
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Click to expand...
Click to collapse
and u think if i put rom with mg4 baseband it will work?
sprajo said:
and u think if i put rom with mg4 baseband it will work?
Click to expand...
Click to collapse
Hey mate i FIXED it using your method, i downloaded mg4 firmware, and now my Imei is back, service is up and runing, thanks alot! One more question can now i flash some custom roms or i will get invalid imei again?
sprajo said:
Hey mate i FIXED it using your method, i downloaded mg4 firmware, and now my Imei is back, service is up and runing, thanks alot! One more question can now i flash some custom roms or i will get invalid imei again?
Click to expand...
Click to collapse
Don't flash anything until you take time to read the faqs and guides .
basic knowledge is required ignorance just leads to a bricked phone .
sprajo said:
Hey mate i FIXED it using your method, i downloaded mg4 firmware, and now my Imei is back, service is up and runing, thanks alot! One more question can now i flash some custom roms or i will get invalid imei again?
Click to expand...
Click to collapse
And back up your efs now, today, to three different places, then back it up to two more to be sure.
pinsb said:
And back up your efs now, today, to three different places, then back it up to two more to be sure.
Click to expand...
Click to collapse
Ha ha. We make light, but ^^ THIS
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Network Not Registered on Stock or other ROMs besides Android Revolution HD

Good day.
I was going back & forth from Stock & SuperNexus 2.0 just fine. Then I tried Android Revolution ROM, and now my problem is everytime I flash Stock or any other ROM, I can't text or call. The signal bar is fine. It's just that I can only make Emergency calls and it says Network Not Registered. But if I flash back Android Revolution, it's fine again. I've tried the clean routine (Factory Reset/Wipe Cash/Wipe Dalvik), still no luck.
Anyone encountered this before or any solution/suggestions?
Thank you.
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By the way, I'm running an International version of Samsung Galaxy S3/Jelly Bean 4.1.2/16GB
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is your imei intact? does it match what is under your battery? how about serial number? did you flash a rom with an mg4 or mg2 baseband? do you have a backup of your efs folder? read these before flashing anything further http://forum.xda-developers.com/showthread.php?t=2393289 http://forum.xda-developers.com/showthread.php?t=2377731
good luck!
Thank you for the reply. Im guessing that's what happened. But I will try to determine if my IMEI changed, so is my efs.
I hope there's a workaround and its reversible.
Thank you again.
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if you did not back up your efs folder and if your imei has changed than most likely you flashed a newer baseband from mg4 mg5 or mg6 roms . and then reverted to an older baseband which can no longer read your efs folder. some people have been able to fix the problem by flashing once again an mg4 or mg5 or mg6 rom. perhaps doing this will allow you to regain your network connection and efs folder.
I checked. My IMEI and SERIAL Numbers are still the same with what's written on the back of my phone.
I've also confirmed on the Android Revolution HD 29 thread that it doesn't change the efs.
Any other ideas guys?
Thank you.
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android revolution 29 modifies the efs folder so that it cant be used by older modems. it uses the mg4 baseband. since your imei is intact i am guessing that you are either back on android revolution or a rom that uses either mg4 or mg2 baseband as those are the only basebands that will work with the modified efs folder. if you still have no network but imei abd serial number are intact then check your apn settings to see if they are correct and compatible with your carrier
---------- Post added at 01:46 AM ---------- Previous post was at 01:39 AM ----------
Android Revolution HD 29.0
--- release date: 31 July 2013 ---
•Based on latest official Samsung 9300XXEMG4 firmware
•Other minor changes and fixes
•Included and updated custom components:
I see. Yes, I am on AR29 right now since it's the only ROM I have that's has a working cellular network.
I made a recovery (cwm) backup when I was on SuperNexus, which I had no network problem with.
1) Can I extract my efs from there & flash that? Or...
2) Can I try and restore that backup without any major problems?
My ultimate goal really is to go back to my Stock ROM.
Btw, thank you so much for your patience Sir.
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cwm does not backup efs . for efs backup use hc-ktool from play market and efs pro. make backups and leave them on your ext sd card as well as your computer. you can flash any stock firmware from sammobile.com as long as the rom is in the "G" series. for example mg4 or mg5 or mg6. any rom from a-f will not read the efs as they all use older basebands. basically you cannot go backwards.there are many roms now that use mg basebands if you cant find one that matches the csc for your country than try any other firmware as long as it is a G rom or higher.
Very educational Sir.
Thank you again for your help.
It's much appreciated.
Good day.
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triddlejr said:
Very educational Sir.
Thank you again for your help.
It's much appreciated.
Good day.
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Click to expand...
Click to collapse
I've the same problem
Do you have solved?
read http://forum.xda-developers.com/showthread.php?t=2393289 and http://forum.xda-developers.com/showthread.php?t=2377731 then reread this thread . should answer all your questions
---------- Post added at 03:17 AM ---------- Previous post was at 03:16 AM ----------
you are welcome . good day to you!
I too use supernexus and stock. Also had this issue. You can still use any rom , you just have to flash a mg4 onwards baseband. For example, you can be on the supernexus ROM with mg4 baseband and you can make calls as usual.
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radixon said:
I too use supernexus and stock. Also had this issue. You can still use any rom , you just have to flash a mg4 onwards baseband. For example, you can be on the supernexus ROM with mg4 baseband and you can make calls as usual.
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Click to expand...
Click to collapse
Can use MG2 baseband also.
Nokiolina said:
I've the same problem
Do you have solved?
Click to expand...
Click to collapse
No. I guess I'll just have to find ROMS with mg4 onwards. Stock or otherwise.
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triddlejr said:
No. I guess I'll just have to find ROMS with mg4 onwards. Stock or otherwise.
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Click to expand...
Click to collapse
flash a stock f/w XXEMG4 or later via odin and then root it. then flash any custom rom via recovery(CWM touch or PHILZ). the custom rom(any AOSP rom)continues to use the same modem you have on the stock f/w.
:good:
Thanks I'll try to do it
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Nokiolina said:
Thanks I'll try to do it
Inviato dal mio GT-I9195 usando Tapatalk 4
Click to expand...
Click to collapse
Let us know about the result? Thanks.
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Nothing well....
I've flashed a stock rom MG4
After I've made root and installed Philz Revovery
I've installed BlackBox 1.3.1 but nothing changed
See my screen
IMEI is always generic and I can't use phone :crying:
Nokiolina said:
Nothing well....
I've flashed a stock rom MG4
After I've made root and installed Philz Revovery
I've installed BlackBox 1.3.1 but nothing changed
IMEI is always generic and I can't use phone :crying:
Click to expand...
Click to collapse
Flash stock and take for repair.

help pls. not conected to network after installing custom rom

Hi all. I installed custom rom on my sgs 3 and now no network. I than installed stock rom again using odin but stil got no network. My imei changed and no ERI. Pls help. I have efs backup but i dnt know how to restore
http://forum.xda-developers.com/showthread.php?t=2393289 try this
Sent from my Nexus 7 (2013)
chrismast said:
http://forum.xda-developers.com/showthread.php?t=2393289 try this
Sent from my Nexus 7 (2013)
Click to expand...
Click to collapse
Thanks for quick reply. But my imei has four 0's in last
majidshahab091 said:
Thanks for quick reply. But my imei has four 0's in last
Click to expand...
Click to collapse
then maybe this will help
chrismast said:
then maybe this will help
Click to expand...
Click to collapse
Thats for serial not imei . If serial is in tact don't do it. 0000 imei same as 0049
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So any other solution?
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majidshahab091 said:
So any other solution?
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Click to expand...
Click to collapse
Read link 1
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when you flashed a custom rom you probably used a rom that included a newer baseband. Such as emg2 or emg4. maybe you did not have the correct apn settings and you were not connecting to your network . then when you flashed stock , perhaps you flashed and older baseband. that older baseband can no longer read your efs partition which contains imei and serial. a possible solution if you did not back up your efs folder is to flash an emg2 or emg4 baseband . or a full stock rom which uses an emg2 or emg4 baseband. all of this is explained in the stickies. the best way to learn is to read them. good luck
Ok.thanks. i wil inform
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did you try to flash an emg2 or emg4 baseband? some have reported that this can restore network connection

[Q] Quesiton about MG4 baseband

I recently flashed MG4 base-band and didn't backup my EFS direction.
I know that MG4 and MG2 changes the EFS partition and it messes up your IMEI code.
So how do I get rid of that "locking" that stops me from flashing other basebands?
I'm currently on MD3 PHONE and MG4 baseband.
Would the backup of current EFS with HC-kTool help when I flash other baseband and restore the efs.img?
Its actually the rom not the baseband that changes efs
No backup, no going back
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rootSU said:
Its actually the rom not the baseband that changes efs
No backup, no going back
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Click to expand...
Click to collapse
So basically If I backup now when I'm in MG4 baseband the backup won't work if I switch to another ROM with different baseband?
The backup will work as a backup of "now". The backup cannot revert you to a "before now" state. Backups only take you back to the moment when the backup was taken. Not before
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rootSU said:
The backup will work as a backup of "now". The backup cannot revert you to a "before now" state. Backups only take you back to the moment when the backup was taken. Not before
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Click to expand...
Click to collapse
I mean if I flash another baseband and restore the backup that I did now, will my IMEI reset ?
I don't understand the question. Why would you restore the backup?
You can't use any baseband older than mg2. End of story
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rootSU said:
I don't understand the question. Why would you restore the backup?
You can't use any baseband older than mg2. End of story
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Click to expand...
Click to collapse
That's what I'm asking. Meaning I'm forever stuck with MG basebands?
Or newer (when released)
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So there's no way of getting rid of MG baseband with working IMEI?
You're trying to joke with me now?
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rootSU said:
You're trying to joke with me now?
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Click to expand...
Click to collapse
No, I'm just new with the S3. Never had problems with my Sony.
trashkutys said:
No, I'm just new with the S3. Never had problems with my Sony.
Click to expand...
Click to collapse
I've already answered you 3 times. 4th time is not giving you a different answer!
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rootSU said:
I've already answered you 3 times. 4th time is not giving you a different answer!
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Click to expand...
Click to collapse
Alright. Thanks for the answers
.

[Q] 00499 IMEI Problem

Hi,
After using Android Revolution HD, I flashed back my original ROM. Now the phone doesn't register to the network and my IMEI number is 004999010640000. How can I get my old IMEI back so I can use my phone correctly?
I have to mention that I have no EFS backup.
Thanks in advance...
Did you read the stickies in general? I only ask because there is a whole thread about this.
This thread gets posted 15 times a day. Please stop duplicating it
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One thing you can do to possibly recover your imei and network settings is to flash a stock rom that uses mg4 or mg2 baseband. use a rom from sammobile and flash with odin make sure you use a rom with an mg2 or mg4 baseband. good luck
make sure to read the stickies
Flash stock ROM, stock recovery, don't forget triangle away and give it back to warranty, I did this 2 weeks ago, and now my phone's fine (Don't forget and EFS Backup now)
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https://play.google.com/store/apps/details?id=com.helroz.GSII_Repair
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