REPAIRING IMEI AFTER ODIN FLASH. - Samsung Galaxy A20 Questions & Answers

I recently flashed this device with the official ROM, which was from android 9 to android 11, but I fell into a hiccup. The phone lost the capability of receiving network, it does detect the sim card but it's not receiving service. I did my research and I realized the IMEI has changed. So I have gone through tons of forums and found out the best way is through an application called Chimera but I can't find a cracked version. If anyone else has a different opinion or way to tackle this I will highly appreciate on your input. Thanks.

Related

i9505 Signal loss

Hello all.
I am having some issues with my Galaxy S4.
I have read through a lot of the signal loss threads the last couple of days.
But I'll explain why those were not helpful to me.
I started by rooting my phone with cf auto root jfte.
Via Odin 3.10.
I then installed twrp and some cm roms.
And experimented with a few different roms and software.
I wasn't bothered about bricking my phone.
I think I did soft brick it a few times but thanks to the help from xda threads I got it back a few times. So thanks for that guys.
Now I am running an official EE rom and modem.
Everything works perfectly and smoothly I am no longer rooted.
But no longer have any signal.
The imei is in tact.
The sim is being read by the phone and also knows what network it's supposed to be on etc.
The phone can search and see the networks sometimes but cannot register on them.
I did try an app while I was patting about with roms called region lock away. As some people said it can some times network unlock the phone.
And it seemingly did with mine.
However a few roms later and I cannot revert whatever it done.
Any ideas on how I can get my signal back would be greatly apreciated.
Thanks.
Andy.
Can anyone assist with this?

Galaxy S3 i9300 - Not registered on network

Hi at all! I'm new on this forum, so I hope I didn't break any rule. Anyway, I'm trying to recover a friend's phone, a Samsung Galaxy S3 (i9300) International Version.
He said he installed a rom called "Android Revolution HD", which appears to be an improved version of the stock rom. Anyway, now the phone does not register on the network.
The IMEI in the settings menu is correct, also the signal appears to be ok, but when I try to select a network, the phone does not register.
So, I tried almost all the solutions I have found on this site, from trying a bunch of different modems, to installing the whole stock ROM (Android 4.3).
But none of these worked. So, there is a real solution I can try?
Thanks in advance!
TestDriver89 said:
Hi at all! I'm new on this forum, so I hope I didn't break any rule. Anyway, I'm trying to recover a friend's phone, a Samsung Galaxy S3 (i9300) International Version.
He said he installed a rom called "Android Revolution HD", which appears to be an improved version of the stock rom. Anyway, now the phone does not register on the network.
The IMEI in the settings menu is correct, also the signal appears to be ok, but when I try to select a network, the phone does not register.
So, I tried almost all the solutions I have found on this site, from trying a bunch of different modems, to installing the whole stock ROM (Android 4.3).
But none of these worked. So, there is a real solution I can try?
Thanks in advance!
Click to expand...
Click to collapse
I have the same problem for months now i have tried a lot of solution but nothing works. i am hoping a senior member can help fix this issue. And just incase some has a viable solution, they should kindly help out. :fingers-crossed:
What I think is you've updated it from 4.1.2 without any EFS backup. Well I had been through the same situation and couldn't find I single thing. In the end I had to get my S3 repaired from a local shop. I think you should go too.

mobile network is unavailable after custom ROM install.

Hello Guys,
I bought an S4 and I discovered that I was scammed (it was the sprint version and not the GT-I9500 as it was indicated on my about phone tab). It comes with 4.4.2 and everything was working fine (the only things that bugs me was that I was unable to receive updates). Recently I encountered some little issues so I decided to install a new ROM. I tried the Vanir and Commotio ROM and for a moment I was super satisfied (it was an amazing experience). However after putting back my SIM card, each time I try to deal a call, I got the error "mobile network is unavailable". I thought it was an issue from the ROM I used so I tested the LineageOS and same issue. Finally I tested the STOCK ROM Lollipop and the same issue again except this time the WiFi does not work. Now my phone is completely useless, so can anyone help please ?
PS: When I go to settings->about->status, everything about the SIM info(network, my phone number,...) is set to unknown. the IMEI is intact (non null). IMEISV is 00.

S8 plus ussd problems, call forwarding

Hi first post here but not a complete newbie. But this time I'm stuck big time and would appreciate some help.
I've got a s8 plus that recently started playing up. All of a sudden it started not being able to make or receive calls. But I noticed it only happened when the "conditional call forwarding active" message didn't appear when dialing. I figured it had something to do with call forwarding so try to change the settings on supplementary services settings but when I tried to enter the settings an error message appeared "failed to read data" I tried sending the code manually to cancel voice mail *#022# to see if it would work but I got "connection problem or invalid mmi code" so assumed it could be that the phone is trying to check with the network the forwarding settings as the call starts but for some reason it cannot communicate with it as the mmi codes don't seem to working?? (I'm not that knowledgeable in that area) I tried all the fixes online for the "connection problem or invalid mmi" but none work so I flashed the firmware through Odin even tried a few different ones, I've been playing around with Odin for a while so I'm comfortable with it, I even flashed a pit once for a note 4 that was bricked (just saying so you can see I'm comfortable with using it, not an expert just comfortable) but nothing has fixed my problem my phone is a g955fd running pie and one UI with the latest security update. I've read the duos have some issues with this. I've tried other sim cards on my phone from different carriers and the problem is the same and I'm using my sim on a borrowed phone and no problems. I'm assuming the problem goes deeper than the firmware, could this problem be boot loader related? Would a nand erase and reinstalling the boot loader fix it? Everything else works 100%
Someone please help me, the phone I'm borrowing is an apple and every day I have it I feel weaker and dumber, it's like kryptonite.
Sorry for the long post but I've been browsing xda forums for years and I know that you guys always say to share as much info as possible. By the way I've searched and couldn't find a thread about this but it there is one I promptly apologize and just ask for the link to it if not thanks in advanced.
? G935F or G935U exynos vs snapdragon
Way for snapdragon
Flash https://forum.xda-developers.com/galaxy-s8+/development/rom-t3901074 with odin and test with hard factory reset recoery.
After, flash odin last firmware stock sammobile
Thanks
Thanks for your reply deadedge7
As I said my s8 + is a duos g955fd variant and has an Exynos processor, I'm not sure that rooting it would make much of a difference, as to my understanding rooting doesn't really change the boot loader it just allows you to install a custom recovery and roms. Which is not much different to reflashing a stock rom for all intents and purposes , but I might give it a try anyway. I guess that maybe a rom like the one in the thread you shared might give me some more hidden codes access as a root but I'm not sure. I will try to find a root like it for my variant unless you know of one and can point me to it.
Thanks
Hard reset or flash stock software or hardware problem
For iemi best way is root efs with flash twrp best way for /EFS
https://forum.xda-developers.com/android/general/guide-restore-imei-fix-corrupted-efs-t3116217 read only
Bellboy4510 said:
Thanks for your reply deadedge7
As I said my s8 + is a duos g955fd variant and has an Exynos processor, I'm not sure that rooting it would make much of a difference, as to my understanding rooting doesn't really change the boot loader it just allows you to install a custom recovery and roms. Which is not much different to reflashing a stock rom for all intents and purposes , but I might give it a try anyway. I guess that maybe a rom like the one in the thread you shared might give me some more hidden codes access as a root but I'm not sure. I will try to find a root like it for my variant unless you know of one and can point me to it.
Thanks
Click to expand...
Click to collapse
I am facing the same issue. Same variant. latest update April 1st Security Patch. Data and texting work. but can't make or receive calls. Have you found any solutions?
@unbreakabl3
I am facing the same issue. Same variant. latest update April 1st Security Patch. Data and texting work. but can't make or receive calls. Have you found any solutions?
Click to expand...
Click to collapse
No solution so far. I've rooted the phone and install a couple of custom ROMs but still nothing. I'll try and roll back the firmware and see what happens. I'm no expert but I still think it is fixable. If I find a solution I'll post it on this thread. If you find one please share. My solution at the moment is getting a galaxy A50, very comparable performance with the S8 and really cheap.
Bellboy4510 said:
@unbreakabl3
No solution so far. I've rooted the phone and install a couple of custom ROMs but still nothing. I'll try and roll back the firmware and see what happens. I'm no expert but I still think it is fixable. If I find a solution I'll post it on this thread. If you find one please share. My solution at the moment is getting a galaxy A50, very comparable performance with the S8 and really cheap.
Click to expand...
Click to collapse
I'll keep that in mind. Couple of things to note: I don't get the message conditional call forwarding active. I don't think I ever have.
I tried a different carrier SIM card(T-mobile) and it worked (I'm on At&t). I was able to make and receive calls. Even tried an out of country SIM card and received calls. But my At&t SIM works on other phones perfectly. Go figure lol.
The only other reason I can think of is maybe cos it fell a couple of times from the couch. About 1.5ft. New case kept making it slide off.
Install (Phone INFO SAM).apk
check csc if they are all the same operator
deadedge7 said:
Install (Phone INFO SAM).apk
check csc if they are all the same operator
Click to expand...
Click to collapse
Here is the screenshot from the app
unbreakabl3 said:
Here is the screenshot from the app
Click to expand...
Click to collapse
Original missing and DBT and XSG not same
It must be all same
flash stock firmware odin bl ap cp and csc
Install apk phone info sam
Check csc original and all same
After flashing firmware stock, *#243203855# to choose good csc reset and test

LS990 need instructions for root please

Hi,
My D852 board failed from WiFi issue. While traveling replaced mobo with LS990 Sprint board. It won’t connect to data now because of cdma issue with gsm sim.
I’ve been reading on here for a week or more trying to sort out what I need to do.
Therefore, my goal is to get gsm data and sim working in the simplest way possible.
Please help:
1. Instructions to root it. It’s a LS990ZVE build with 5.01. I can’t find info on zve rooting. I google and find very little if anything. Do I have to downgrade or upgrade the system to root it?
2. Once I root I will install the TWRP app and make a NANDroid copy so I don’t get into trouble. I would like to install LineageOs 16 (or otherwise based on your opinions) for Android 9.0 and Gapps. Will this work on my motherboard and build?
3. Will the LineageOs 16 rom also fix the cdma to gsm problem? Or do I have to use a patch on top of lineageos16?
4. Can I perform all of these changes without using a pc? Using apps and the storage on the phone or sd card? I’m trying to keep it simple.
5. The board is clean right now without my old LG backup restored yet. At what point can I restore this LG backup to the new board? Before rooting? Or after flashing with LineageOs 16. The problem for me is I did the backup with the lg installed software and the file likely won’t be compatible once I flash with a new rom?
Please help.
Thank you.
Mechif said:
Hi,
My D852 board failed from WiFi issue. While traveling replaced mobo with LS990 Sprint board. It won’t connect to data now because of cdma issue with gsm sim.
I’ve been reading on here for a week or more trying to sort out what I need to do.
Therefore, my goal is to get gsm data and sim working in the simplest way possible.
Please help:
1. Instructions to root it. It’s a LS990ZVE build with 5.01. I can’t find info on zve rooting. I google and find very little if anything. Do I have to downgrade or upgrade the system to root it?
2. Once I root I will install the TWRP app and make a NANDroid copy so I don’t get into trouble. I would like to install LineageOs 16 (or otherwise based on your opinions) for Android 9.0 and Gapps. Will this work on my motherboard and build?
3. Will the LineageOs 16 rom also fix the cdma to gsm problem? Or do I have to use a patch on top of lineageos16?
4. Can I perform all of these changes without using a pc? Using apps and the storage on the phone or sd card? I’m trying to keep it simple.
5. The board is clean right now without my old LG backup restored yet. At what point can I restore this LG backup to the new board? Before rooting? Or after flashing with LineageOs 16. The problem for me is I did the backup with the lg installed software and the file likely won’t be compatible once I flash with a new rom?
Please help.
Thank you.
Click to expand...
Click to collapse
Your going to want to replace that board with a compatble gsm model or use the phone on sprint
Using a Sprint model board/G3 your gonna have nothing but problems and a bad time with it. Not worth the headache even if it was free
Sent from my SM-G960U using Tapatalk
Hi Hyelton,
Thank you for responding.
I would still like to give this a try as I have nothing to lose and will use the phone only for another 4-6 months then I’m buying a new phone. I’ve been dealing with the WiFi issue on the original board for 12monhs on a weekly basis, taking it apart and repositioning the plastic credit card fix and/or heating the WiFi chip. I can always flash this Sprint cdma board back to the original Sprint code with the nandroid backup if it’s not working happily. Also, I’m in Canada and can’t use the Sprint network from here.
Therefore, please let me know what methods to use as I will greatly appreciate help. I’m interested in this realm of android as a hobby and learning something new.
Mechif said:
Hi Hyelton,
Thank you for responding.
I would still like to give this a try as I have nothing to lose and will use the phone only for another 4-6 months then I’m buying a new phone. I’ve been dealing with the WiFi issue on the original board for 12monhs on a weekly basis, taking it apart and repositioning the plastic credit card fix and/or heating the WiFi chip. I can always flash this Sprint cdma board back to the original Sprint code with the nandroid backup if it’s not working happily. Also, I’m in Canada and can’t use the Sprint network from here.
Therefore, please let me know what methods to use as I will greatly appreciate help. I’m interested in this realm of android as a hobby and learning something new.
Click to expand...
Click to collapse
What software is it currently running? If anything newer most likely won’t have any chances... there are several methods. But most involve software version ZV8. If it’s newer than that downgrading is prob not an option.
And you’ll need a windows PC you can’t do this from the phone itself
Sent from my iPhone using Tapatalk
It has android 5.01 (lollipop?) and build is LS990ZVE
I had a hard time finding information on the differences of ZV_ line up of android so I don’t know if ZVE is newer or older than ZV8.
I have a laptop running Windows 7 and a pc running vista ( but vista pc not with me right now).
Mechif said:
It has android 5.01 (lollipop?) and build is LS990ZVE
I had a hard time finding information on the differences of ZV_ line up of android so I don’t know if ZVE is newer or older than ZV8.
I have a laptop running Windows 7 and a pc running vista ( but vista pc not with me right now).
Click to expand...
Click to collapse
Your most likely gonna need to find someone with an oculus box or whatever they’re called as I doubt you’ll be able to downgrade
Sent from my iPhone using Tapatalk
hyelton said:
Your most likely gonna need to find someone with an oculus box or whatever they’re called as I doubt you’ll be able to downgrade
Sent from my iPhone using Tapatalk
Click to expand...
Click to collapse
What version android is zve? I’d like to read about the levels of android using these letter versions.
What levels or build versions allow me to do what I’m trying to do?
Is there anyone else on our forum here that would also be able to help that you know of?
Mechif said:
What version android is zve? I’d like to read about the levels of android using these letter versions.
What levels or build versions allow me to do what I’m trying to do?
Is there anyone else on our forum here that would also be able to help that you know of?
Click to expand...
Click to collapse
You stated that above. ZVE is 5.0.1. It’s newer than ZV8.
Your gonna need to pay someone with an oculus box most likely. And paying for a phone line that it would be cheaper to just buy a gsm one
Sent from my iPhone using Tapatalk

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