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Imei number changed on i9500

i lost imei and data connections on galaxy s4 i9500. when i try to make calls ,,, it says not registered on network. my imei number changed totally. it shows 004999010640000/01 . my original imei is different. i dont efs backup. what to do ??? please help !!!!

Just flash MG9 modem via ODIN.

Help
@thienbrand its fixed now. thanks bro

Thats only a workaround..
If you have issues or problem with mg9.. you cant easily downgrade..
Clean system in Philz rec.. then flash (odin) the firmware installed on your s4 when you get it out of the box..
Ive been with this problem from crash mg9 rom..

THANK YOU SO MUCH @thienbrand
I HAVE GROWN A SMALL AMOUNT OF LOVE FOR YOU
LOL
JK BUT FOR REAL, THANKS, YOU DAVED MY A#S BIG TIME

no it's not my work, you should thank the developer-team and kick samsung's ass.

[Q] Fake IMEI after flash & no backup available

Hey guys,
I have a very big problem. I've got a fake IMEI after flashing a custom rom and I can't find my IMEI Backup anymore.
I tried many solutions but nothing helps.
Device Info:
Samsung Galaxy S4 GT-I9500
Country: Vietnam
IMEI:004999010640000/01 (I think it's a fake IMEI, so it's useless for everybody and i can post complete no.)
Tried Fix:
Downgrade Stockrom 4.2.2 from Vietnam
File: I9500XXUBMG1_I9500OLBBMF9_XXV.zip
result: No Fix
After Downgrade, Upgrade to 4.4.2 Stock from Vietnam
File: I9500XXUFNB7_I9500OLBFNB4_XXV
result: No Fix
Flash some other Modems (not all in threadt)
result: No Fix
EFS Restore with "EFS Professional"
result: No Fix
Copy EFS folder to Windows & edit with HxD-Tool (nv_data.bin & serial_no)
result: No Fix
I hope you can help me. I know there are very much threads in XDA but nothing works and most threadts are very old.
Maybe i'm to stupid... ~.~
Ps: Sry for my very bad english. I hope you understand me.
Thank You
Guys

There is no way to fix by yur own
Yu need special tools lik z3x or spt or octopus Samsung Repairing Box
Vit these tool yu can repair efs, write original imei back etc
Otherwise bettr find a gud mobile service center. They vil fix yur prob vitin 30min

Unfortunately you cannot get the help you are looking for on xda. The way you need to fix this is not legal in most places in the world. So the discussion of this kind of information is not permitted on xda
Sent from your phone. You should be more careful where you leave that thing.

Problèm with imei

Hello i need some help i try to flash my phone And i loose my imei Someone can help me to write my imei on my phone i dont arrive with efs professionnal And z3x dont support note 3 please help me

Flash back the last firmware you flashed and the imei will be reinstalled
tizouk17 said:
Hello i need some help i try to flash my phone And i loose my imei Someone can help me to write my imei on my phone i dont arrive with efs professionnal And z3x dont support note 3 please help me
Click to expand...
Click to collapse

jamesclinton said:
Flash back the last firmware you flashed and the imei will be reinstalled
Click to expand...
Click to collapse
It's happening the same with my phone, but I really want this new firmware. Why do I lose my IMEI? Is that firmware not compatible with my phone? Anything to do aside of that?

Unknown baseband,null imei and no sound...plz help to fix this issue

i was trying out an aokp rom and ended up with null imei and unknown baseband
gave phone to repair and ended up in no sound situation as well
my model number is sm-n9005 which i bought from melbourne and currenly using it in india
so far i tried many solution fixes from xda and none of then worked out for me
1.tried flashing stock rom 4.4.2 poland which was working fine earlier before this situation arise but unfortunately it didnt work out this time
2. tried to flash other custom roms and no luck
3.i have no efs back up to retore the efs folder
4.havnt tried anything yet via adbshell as i have no much knowledge regarding the same
plz help me to fix this issue also im uable to give it to samsung service centre as the dont provide service for 9005 model here

sujithsidharth said:
i was trying out an aokp rom and ended up with null imei and unknown baseband
gave phone to repair and ended up in no sound situation as well
my model number is sm-n9005 which i bought from melbourne and currenly using it in india
so far i tried many solution fixes from xda and none of then worked out for me
1.tried flashing stock rom 4.4.2 poland which was working fine earlier before this situation arise but unfortunately it didnt work out this time
2. tried to flash other custom roms and no luck
3.i have no efs back up to retore the efs folder
4.havnt tried anything yet via adbshell as i have no much knowledge regarding the same
plz help me to fix this issue also im uable to give it to samsung service centre as the dont provide service for 9005 model here
Click to expand...
Click to collapse
Try this post of mine. Good luck.

vndnguyen said:
Try this post of mine. Good luck.
Click to expand...
Click to collapse
well i manage to bring back sound and baseband by flashing australian firmware and doing some modem flash over it
after that i tried couple of old roms but still imei remains "/01"
now i flashed back the australian firmware, this time didnt have to flash modem to brig back sound as it booted up normally
but still im struggling to fix my imei number as now i have a wifi phablet instead of working phone??
is it possible to fix the imei number somehow...this whole thing is driving me crazy!!!

Follow this link http://forum.xda-developers.com/showthread.php?t=2567133
Same thing happen to me. U cant bring back ur Ime flashing some roms or firmware. Because Now your EFS is blocked by KNOX. After you upgrade Do not downgrade or flash older modems .
This is the method you can bring back your phone. Before try this method flash the lates firmware then try these commands.
Good luck

N9005 Baseband version unknown, IMEI null HELP!

Yesterday I was running unofficial lollipop leak rom everything was okay then I downgraded to official kitkat via odin after that the phone became so lagy and weird, unknown Baseband version, IMEI null also camera and sound doesn't work! I tried to flash the lollipop leak again but no result same problem I also tried many stock and custom roms I was using before but nothing changed Baseband still unknown and unfortunately I don't have EFS backed up! Please help me solving this problem.

So much flashing and no backup ever. Bingo
Search the forums because there is an answer

I didn't know I'd need it :/
Is there a solution for this case?

Problem solved.

how
MarshR8 said:
Problem solved.
Click to expand...
Click to collapse
how u solved it ????

i have this problem
i have this problem how to fix this pls

MarshR8 said:
Problem solved.
Click to expand...
Click to collapse
how you solved your problems I have the same. please

Just do the firmware recovery in Samsung Kies.
Take out battery and follow instructions in firmware upgrade and initialization on Samsung Kies.
Should reset everything to normal again
If it doesn't ask for model number and serial number in the setup you need to have the phone disconnected and connected when it asks.
Hope this helps

Why would he help others when he got help. Just run away is the norm. ?