Database Develop

[Q] Samsung Galaxy S3 Mini GT-I8190N - Re-flashing stock rom

Hi All.
I am looking for help and advice with regarding to re-flashing the stock rom on my wife's Samsung Galaxy S3 Mini GT-I8190N.
The phone in quick is 100% stock, it has never been unlocked and or had any custom rom's installed.
The reason why I wish to reflash the stock rom is due to the phone being stuck in a boot-loop, and not being able to access the boot-loader / factory reset.
I have already download ODIN v3.09, But as the phone does not boot and I can not get into the boot-loader to run any ADB or Fastboot commands, I am unable to find out what the phone was running.
The phone is/was on contract via Tesco Mobile here in the UK, But Tesco's have told my wife that the warranty for her phone has expired.
The only information I have been able to find is via the Odin Mode, but this does not give much.
ODIN MODE
PRODUCT NAME: GT-I8190N
CUSTOM BINARY DOWNLOAD: NO
CURRENT BINARY: Samsung Official
SYSTEM STATUS: Official
HW REV: 0x5
Click to expand...
Click to collapse
Can anyone here please advice me on how I can find the correct stock rom for this phone.
Thanks for your time.
Best Regards.

Hi,
There's a website called Sammobile where you can download the original firmware of a large number of phones.
Cheers

As said above I do not know what is the correct firmware (rom) to download for this phone.
How can I tell what is the correct firmware (rom) to download?
I have looked on http://www.sammobile.com but there is no firmware (rom) listed for Tesco Mobile.
From my understanding is the the BTU is the unbranded firmware (rom)
http://www.sammobile.com/firmwares/database/GT-I8190N/BTU/
I8190NXXAMJ2_I8190NBTUAMJ1_BTU.zip
I8190NXXAMG1_I8190NOXXAMG1_BTU.zip
I8190NXXALL6_I8190NOXXALL3_BTU.zip
What will happen if I try and re-flash any of the above files via Odin to the phone, if I pick the wrong file am I going to hard brick the phone?
Thanks for your time.
Best Regards.

Nothing bad will happen if you flash any of the I8190N firmwares.

Thank you for your reply.
I saw in another post that there should be a sticker on the NAND flash memory chip with some details of what was flashed into the chip at the factory, I took the phone apart and sure enough there was indeed a sicker.
073110
H49C BTU
HS033741
C-HVT1
I8190NXXA
Click to expand...
Click to collapse
So it seems that I was right in guessing to go for the unbranded (BTU) firmware / rom.

Thank you !

Still not update camera night mode on galaxy note 9 korean(sm-n960n)

Hi Guys...
Im note 9 Korean user, and i still not get updated OTA camera night mode
I am in Indonesia now
Didn't other SM-N960N users get it yet?
Thanks for your time Guys

youngguys said:
Hi Guys...
Im note 9 Korean user, and i still not get updated OTA camera night mode
I am in Indonesia now
Didn't other SM-N960N users get it yet?
Thanks for your time Guys
Click to expand...
Click to collapse
nope n960n has no update yet. i check every 2 days using samfirm tool 0.3.6

youngguys said:
Hi Guys...
Im note 9 Korean user, and i still not get updated OTA camera night mode
I am in Indonesia now
Didn't other SM-N960N users get it yet?
Thanks for your time Guys
Click to expand...
Click to collapse
same here, no update.

ubejd said:
same here, no update.
Click to expand...
Click to collapse
+1 using cho firmware

guys just use samfirm tool 0.3.6 on your PC to check for the update. no need to ask or post if its out or not:
enter as device model:
SM-960N
And Region: dosent really matter but u can choose the carrier that the device is from:
LUC
KOO input this one if unsure
SKC
KTC
or choose the one with the latest fimrware/date code
(but rightnow only May is available)
check regularly as the app seems to connect to samsung servers so it will be the first place for the firmware to pop up.( and download speeds are fast. way faster than sammobile free or other crapy sites.)
https://forum.xda-developers.com/ga...g-firmware-t2988647/post57842725#post57842725
to dl the tool on the post link above , skip the part where it says depreciated and dl it from attached OP post. read up though on the windows ( MS redist) dependencies to run it.
downloaded firmware is flashable once extracted using odin 3.13.3 from here:
https://dl2018.sammobile.com/Odin3-v3.13.3.zip
this required to see phone com port with odin
samsung usb drivers:
https://drivers.softpedia.com/get/M...ver-for-Mobile-Phones-1-5-65-0.shtml#download
put phone into download mode:
(make sure your device is off before doing anything.) hold the following button combo: VOLUME DOWN + BIXBY and plug usb cable from PC to phone then release button when you see DL mode and press vol up to accept to enter it.
in odin:
to not reset/wipe data fill in all slots with unziped md5's from file downloaded with samfirm: BL, AP, CP AND CSC (use ONLY these 4 corresponding files*)
(* For csc: home_csc.md5 is to not loose data and regular *csc.md5 will wipe clean.) (userdat.md5 is korean bloat, skip it not needed if you are not on korean sim carrier)
if you are on a custom rom(rooted device) and just want to update bootlaoder and modem to latest, then flash only ;
BL.md5 and CP.md5 in the according slots.
flashing official firmware and components like this dosent trip knox or voids warranty so its all safe.
edited for links to the tools needed and some clarifications.

bober10113 said:
guys just use samfirm tool 0.3.6 on your PC to check for the update. no need to ask or post if its out or not:
enter as device model:
SM-960N
And Region: dosent really matter but u can choose the carrier that the device is from:
LUC
KOO
SKC
KTC
or choose the one with the latest fimrware/date code
(but rightnow only May is available)
check regularly as the app seems to connect to samsung servers so it will be the first place for the firmware to pop up.( and download speeds are fast. way faster than sammobile free or other crapy sites.)
https://forum.xda-developers.com/ga...g-firmware-t2988647/post57842725#post57842725
to dl the tool on the post link, skip the part where it says depreciated and dl it from attached OP post. read up though on the windows ( MS redist) dependencies to run it.
dled firmware is flashable once extracted using odin 3.13.1
to not reset/wipe data fill in all slots with unziped md5's: BL,AP,CP AND CSC only.
(for csc use home_csc.md5 to not loose data as regular csc.md5 will wipe.) (userdat.md5 is korean bloat, skip it)
if you are on a custom rom and just want to update bootlaoder and modem to latest, then flash only ;
BL.md5 and CP.md5 in the according slots.
flashing official firmware and components like this dosent trip knox or voids warranty so its all safe.
Click to expand...
Click to collapse
Thank you Guys, your explain very easy to understood and finally i know what should i do if update still yet.
Guys let me ask, how to remove carrier logo like Verizon, SKT, LUC, AT&T etc. When turn on or turn of the phones?
Thanks a lot if you can help me Guys
Thanks very much.

youngguys said:
Thank you Guys, your explain very easy to understood and finally i know what should i do if update still yet.
Guys let me ask, how to remove carrier logo like Verizon, SKT, LUC, AT&T etc. When turn on or turn of the phones?
Thanks a lot if you can help me Guys
Thanks very much.
Click to expand...
Click to collapse
with root its easy. but without i dont know.
try to install the KOO firmware. i believe it is the "unbranded" firmware for korean n960n devices.
be careful of personal data if you try. using the method described above to flash with odin.( the part when using csc.md5 file because i might wipe data from phone. but it might also remove bootlogo and more bloatware apps from korea)

bober10113 said:
with root its easy. but without i dont know.
try to install the KOO firmware. i believe it is the "unbranded" firmware for korean n960n devices.
be careful of personal data if you try. using the method described above to flash with odin.( the part when using csc.md5 file because i might wipe data from phone. but it might also remove bootlogo and more bloatware apps from korea)
Click to expand...
Click to collapse
I tried flash trwp crownite and failed at flashing via odin, i think is not working for now (pie)
This is my buildnumber N960NKSU2CSE3 this for baseband N960NKOU2CSD2 if i download KOO firmware
which one should I choose? Buildnumber or base band?
Btw i got firmware KOO but unziped file i get 6 fil, AP, BL, CP, CSC, HOME CSC, and USER Data how i must input User Data File to?

I'm in Korea too, using an unbranded KOO N960N (exynos). It seems like the update is unavailable in this region. I left a question on the Samsung Members forum, and it seems like they're saying the night sight camera mode had some pretty large bugs, so they have to fix that. Also, the night sight camera update was just released for the S9 series, so hopefully it shouldn't be long before we can get it for the Note 9.
[edit]
Also, checking the latest firmware for N960N in SAMFIRM results in the same firmware, an outdated May 2019 version withOUT night sight camera. Looks like we will have to await the official release ...
This sucks because my Mate 20 Pro takes absolutely stunning pics at night.

ca12bon said:
I'm in Korea too, using an unbranded KOO N960N (exynos). It seems like the update is unavailable in this region. I left a question on the Samsung Members forum, and it seems like they're saying the night sight camera mode had some pretty large bugs, so they have to fix that. Also, the night sight camera update was just released for the S9 series, so hopefully it shouldn't be long before we can get it for the Note 9.
[edit]
Also, checking the latest firmware for N960N in SAMFIRM results in the same firmware, an outdated May 2019 version withOUT night sight camera. Looks like we will have to await the official release ...
This sucks because my Mate 20 Pro takes absolutely stunning pics at night.
Click to expand...
Click to collapse
How user n960n will wait to long for this night camera mode?
Guys, you use KOO firmware Is there no carrier logo when booting? Like Skt, Luc?
What your firmware when first you buy this phone?

youngguys said:
I tried flash trwp crownite and failed at flashing via odin, i think is not working for now (pie)
This is my buildnumber N960NKSU2CSE3 this for baseband N960NKOU2CSD2 if i download KOO firmware
which one should I choose? Buildnumber or base band?
Btw i got firmware KOO but unziped file i get 6 fil, AP, BL, CP, CSC, HOME CSC, and USER Data how i must input User Data File to?
Click to expand...
Click to collapse
all required information was posted in my big post. please read it and follow it correctly to get your answers.
moreover you might need to install samsung android drivers. you can search for them on xda or you can install samsung smart switch. it has the drivers built in. the software is useless it is only being installed for the driver package.

bober10113 said:
all required information was posted in my big post. please read it and follow it correctly to get your answers.
moreover you might need to install samsung android drivers. you can search for them on xda or you can install samsung smart switch. it has the drivers built in. the software is useless it is only being installed for the driver package.
Click to expand...
Click to collapse
Give me link your big post guys, i wanna read it for more intruction
Thank you

youngguys said:
Give me link your big post guys, i wanna read it for more intruction
Thank you
Click to expand...
Click to collapse
well its the one i posted 6 or 7 messages ago...

just got the update with night mode and july security - n960n.

I am also a N960N user, cheers！

No carrier logo on KOO, but the phones are more expensive. No bloatware whatsoever.
BTW, we just got night mode a day or two ago.
The night mode is still 2 or 3 generations technologywise behind the Mate 20 Pro, Im gonna have to sell my device so if anyone in KR wants to buy it, leave me a PM.
Its in pristine condition with 6 cases

youngguys said:
Give me link your big post guys, i wanna read it for more intruction
Thank you
Click to expand...
Click to collapse
Guys i has been tried dor flashing firmware LUC to Firmware KOO and flashing succes, but still in same firmware before flashing..carrier logo bloatware ect
Actualy how this step be succes to change firmware guys?

ca12bon said:
No carrier logo on KOO, but the phones are more expensive. No bloatware whatsoever.
BTW, we just got night mode a day or two ago.
The night mode is still 2 or 3 generations technologywise behind the Mate 20 Pro, Im gonna have to sell my device so if anyone in KR wants to buy it, leave me a PM.
Its in pristine condition with 6 cases
Click to expand...
Click to collapse
Guys can you guide me to flash this rom?
You input User_data file on odin?

ca12bon said:
No carrier logo on KOO, but the phones are more expensive. No bloatware whatsoever.
BTW, we just got night mode a day or two ago.
The night mode is still 2 or 3 generations technologywise behind the Mate 20 Pro, Im gonna have to sell my device so if anyone in KR wants to buy it, leave me a PM.
Its in pristine condition with 6 cases
Click to expand...
Click to collapse
Bro...are you only flash AP file(KOO firmware)?
Please Bro answer me!!
I just wanna remove the bloatware, thanks

youngguys said:
Bro...are you only flash AP file(KOO firmware)?
Please Bro answer me!!
I just wanna remove the bloatware, thanks
Click to expand...
Click to collapse
u have to flash a minimum of BL AP CP CSC
there will always be some carrier bloat leftover. the only way is to root and install a custom rom to get rid of everything.

Is my note 9 genuine?

Hi all,
I'm coming into a such weird situation and I'll try to mention all the aspects.
I bought my note 9 a week ago from an online store (noon.com in UAE).
Seems like the phone is korean variant. Here's what is weird:
1- Model no. : SM-N960FD
2- model no. In the software (settings): SM-N960F/DS
3- phone's back at the very bottom (small text) reads: *N950F*
4- the phone was sealed and had samsung sticker which states it has never been opened before.
5- I came to realize that the spen has no bluetooth as there has been connectivity issue forever.
6- as i opened the hotspot, the device name is "DrKetanRom_5e10" which is a custom rom i believe.
7- I can't fine phone update section in settings.
8- The device is rooted when using root checker app.
9- phone status is custom.
10- SE for android status mentions DrKetan as well.
11- the camera lens has variable aperture which proves it's a note 9
12- knox status is 0x0!.
I am very confused! The phone seems totally new and is scratchless all around. I don't know if maybe Korean or chinese version phone comes with no android basic stuff as other shipped phones so Samsung re-installed the software or somethinhg?
If any body can help, that would be highly appreciated!!
Thanks.

Anyone?

ahmedshazly23 said:
Anyone?
Click to expand...
Click to collapse
If you go to bootloader mode you will see that it is n960n, not n960f.
I think these are SKTelecom phones from Korea.
they are original phones but have been refurbished or I don't know the exact term but they are repurposed to be sold like n960f - ds phones.
I also have a similar phone but I got all things intact no issues, I am actually running Dr. Ketan Q rom.
Only My Download mode shows some Korean stuff and I'm used to it from my note 4 days. I had an n910s
Just put your IMEI number on https://www.imei.info/ and it will show your phone details.
I also believe there are certain apps on play store that gives out device info.
All the best, since its already rooted just, go nuts with a badass custom ROM already.

Samsung Phone Information app from playstore has a refurbishment check. And yes it has been rooted with custom rom.
Sent from my SM-N960U using Tapatalk

@vishnu vijay
You are definitely correct, the model number in bootloader mode shows n960n! And download mode shows "download mode" in korean.
So can i just flash the stock rom of sm-n960f/ds and recieve the android Q whenever sasung releases it for the note 9? Or I'm already stuck now?
Also i coming from a note 3, so i have no ideas what are some popular roms for the note 9, also I don't want to loose spen functionality, so can you recommend a rom to install that is stable and saves battery?
Thanks alot for your help!

ahmedshazly23 said:
@vishnu vijay
You are definitely correct, the model number in bootloader mode shows n960n! And download mode shows "download mode" in korean.
So can i just flash the stock rom of sm-n960f/ds and recieve the android Q whenever sasung releases it for the note 9? Or I'm already stuck now?
Also i coming from a note 3, so i have no ideas what are some popular roms for the note 9, also I don't want to loose spen functionality, so can you recommend a rom to install that is stable and saves battery?
Thanks alot for your help!
Click to expand...
Click to collapse
I would recommend that you install the N960N OS back onto it. As the N960N is a single SIM device. I don't know what will happen if you install a the dual SIM variant's OS onto it.

iceepyon said:
I would recommend that you install the N960N OS back onto it. As the N960N is a single SIM device. I don't know what will happen if you install a the dual SIM variant's OS onto it.
Click to expand...
Click to collapse
SM-N960F firmware is the same used for SM-N960F/DS. He should flash the Original firmware meant for the phone. SM-N960N.
Also, if his IMEI that pops up when dialing *#06# matches what is on the back of the phone, then he can flash the SM-N960F firmware.

Actually my phone is dual sim, and sm-n960n is a dual sim firmware.
IMEI is consistent in everywhere, with the box, with the back of the phone, when checking it on the internet.
I know that samsung will not support the note 9 after android Q upgrade, so shall i install a custom rom instead? If yes which one shall i install?
Is there a need - as of now- to install a custom rom, or the stock rom is fine (battery and performance wise)?
Or shall i go for stock android experience (project treble) to enjoy maximum performance?
What do you think?
Sorry for annoyance !

if you dont want it i might trade u for a brand new tmobile branded note 9. but u probably dont want it. (long shot)
im currently looking into what i can do with it if anyone knows feel free im also utilizing att but phone is tmo with device lock app untouched as of right now. . (needing leads)
jus wanted to get in on this thread so i can follow progress

It is probably a real phone but with the software modified.

Just flash the boot loader for n960n from Odin and the Twrp recovery then flash any rom that supports n960n ds or f rom. It works. I've tried ambasadi rom, the galaxy project and dr ketan. All worked for me. Just backup using TWRP and read all dev recommended steps before you flash anything. Or if you prefer stock there was a particular thread I think. All the best.

m.i.a.187 said:
if you dont want it i might trade u for a brand new tmobile branded note 9. but u probably dont want it. (long shot)
im currently looking into what i can do with it if anyone knows feel free im also utilizing att but phone is tmo with device lock app untouched as of right now. . (needing leads)
jus wanted to get in on this thread so i can follow progress
Click to expand...
Click to collapse
you looking to part with it?

ahmedshazly23 said:
Hi all,
I'm coming into a such weird situation and I'll try to mention all the aspects.
I bought my note 9 a week ago from an online store (noon.com in UAE).
Seems like the phone is korean variant. Here's what is weird:
1- Model no. : SM-N960FD
2- model no. In the software (settings): SM-N960F/DS
3- phone's back at the very bottom (small text) reads: *N950F*
4- the phone was sealed and had samsung sticker which states it has never been opened before.
5- I came to realize that the spen has no bluetooth as there has been connectivity issue forever.
6- as i opened the hotspot, the device name is "DrKetanRom_5e10" which is a custom rom i believe.
7- I can't fine phone update section in settings.
8- The device is rooted when using root checker app.
9- phone status is custom.
10- SE for android status mentions DrKetan as well.
11- the camera lens has variable aperture which proves it's a note 9
12- knox status is 0x0!.
I am very confused! The phone seems totally new and is scratchless all around. I don't know if maybe Korean or chinese version phone comes with no android basic stuff as other shipped phones so Samsung re-installed the software or somethinhg?
If any body can help, that would be highly appreciated!!
Thanks.
Click to expand...
Click to collapse
Is it support arabic language

please tell if it has arabic language and how can u solve spen blutooth proplem because i bought new one like u from noon uae

S20FE Not Updating since OneUi 3 and Android 11

Hello all.
My S20FE (SM-G780F) has not updated from OneUi 3 and Android 11. It always says that I'm using the latest software. I've tried factory resetting the phone and using Smart Switch to no avail.
I'm in the UK. Never lived anywhere else. I reside here permanently. It's where I bought my phone brand new.
I checked the service provider software version and it says ZT0/ZTO,ZTO/EUX . However, when I use the dialler method to check the same information it says the CSC is BTL3.
I researched and ZTO seems to refer to Brazil. I've never been to Brazil or anywhere in that vicinity so I don't know why it says ZTO as the service provider information.
Could this be why I'm having issues updating? If the phone thinks it's Brazilian then it would stop me updating if I'm in the UK? Is that correct?
Samsung suggested I send it to them to flash the drive but they require a proof of purchase and as I bought the phone over 2 years ago I can't for the life of me find the original order email.
Just for clarification the phone has never been rooted or modded and all software etc is "official." I've looked into flashing the software with Odin. Would I need ro download the update file for the CSC my phone says it is or for the CSC it should be? Do I only download the latest update or would I have to stack them and download all the previous ones my phone missed too?
Please help before I tear my hair out.

flashing the phone yourself with Odin is very easy, there are dozens of YouTube vids to get an idea from. actually downloading the firmware is more difficult.
whoever sold you the phone is who you should be angry at, it obviously wasn't intended for use here. let me know if you want help flashing!

Same thing happened to my Mom's phone (a Galaxy A series device).
Use this guide and manually flash the latest firmware.

S20FE rooted super weird problem

Hi, im kinda desperate cause i really dont know what to do , here is my issue:
I bought a second hand s20fe i didnt know but its rooted and i want to remove it
The problem is that i tried booting it to download mode removing the root and trying to flash a original samsung stock firmware from odin, but it keep getting a error. Well i realized that the phone original model is SM G780G
And that the software that it had , was the SM G780F
So i downloaded a software for the G780F and apparently it worked with odin
But i want the original G780G software... what can i do?

fawkes1234 said:
Hi, im kinda desperate cause i really dont know what to do , here is my issue:
I bought a second hand s20fe i didnt know but its rooted and i want to remove it
The problem is that i tried booting it to download mode removing the root and trying to flash a original samsung stock firmware from odin, but it keep getting a error. Well i realized that the phone original model is SM G780G
And that the software that it had , was the SM G780F
So i downloaded a software for the G780F and apparently it worked with odin
But i want the original G780G software... what can i do?
Click to expand...
Click to collapse
I'm pretty sure your problem is:
you want to install a system with wrong binary.
Go into download mode and see what binary you have.
After you are sure which binary has downloaded the system you need and that's it.
if you have binary 3
upgrade to binary 3
If you can show a photo of what binary you have to observe.

Binario 1

mezacorleehone said:
Binario 1
Click to expand...
Click to collapse

I would like to tell you the full problem tho if you are so kind to give me a hand. I bought the s20fe second hand and it was rooted with a patched imei (the box and the software imei didnt match), i checked both imei and they are not blocked , so the phone isnt stolen. But here is the thing, the model in the box says 780G, and this software is 780F, the soft and the imei doesnt match. I tried rooting and unrooting, but now i dont have signal and i still have the same imei and software version, i would like to switch to the original imei cause im sure im able to use it , as well i would like to install the proper software version.

fawkes1234 said:
I would like to tell you the full problem tho if you are so kind to give me a hand. I bought the s20fe second hand and it was rooted with a patched imei (the box and the software imei didnt match), i checked both imei and they are not blocked , so the phone isnt stolen. But here is the thing, the model in the box says 780G, and this software is 780F, the soft and the imei doesnt match. I tried rooting and unrooting, but now i dont have signal and i still have the same imei and software version, i would like to switch to the original imei cause im sure im able to use it , as well i would like to install the proper software version.
Click to expand...
Click to collapse
the equipment is not G780G.
1.G780G goes up to binary 4
2.G781B arrives
up to binary 5
3.G781U /U1 /V / N / W . go up to binary A(10)
4.G780F reaches binary A(10)
your equipment is a G780F and not a G780G. You can never load a system from another team, only from your variant.
Download an example system:
G780FXXUAFWB6
Currently there is the binary B(11).
luck.

unfortunately
it was advisable to leave it as it was when buying it.
if everything worked fine, there was no need to update.
just leave it with the system that was already installed.
since to change the imei, chimeratools, z3x is used. etc
They are paid applications and experience is required for it.
I used the z3x, that's why I'm telling you.

I dont understand, cause the model is in the back of the phone...

mezacorleehone said:
unfortunately
it was advisable to leave it as it was when buying it.
if everything worked fine, there was no need to update.
just leave it with the system that was already installed.
since to change the imei, chimeratools, z3x is used. etc
They are paid applications and experience is required for it.
I used the z3x, that's why I'm telling you.
Click to expand...
Click to collapse
It didnt worked fine tho, i had a very low signal, now that i made a mess of course i would love to be back, but i dont know how to install a signal patch and i doubt that samsung would help me if im out of warranty, so i basically lost half of my saves on a phone that i can barely use now... what a luck

fawkes1234 said:
I dont understand, cause the model is in the back of the phone...
Click to expand...
Click to collapse
Personally, it is impossible to install an exynos system on a snapdragon.
It's like putting the engine from one car to another, just like that.
the cover says one thing, your phone another.
the caps are interchangeable.
Those can be put from an s20 fe exynos to a snapdragon.
check well.
personally you have a G780F.

try not to upload to binary B(11)
you will have to pay to solve the problem.
install software that it had initially, if the system was binary 9, it will be impossible.
install
G780FXXUAFWB6
android 13 one ui 5.1 february 2023

Download Galaxy S20 Fan Edition SM-G780F (MXO) G780FXXUAFWB6 in Samfw - Samsung firmware download
Galaxy S20 Fan Edition SM-G780F (MXO - Mexico) G780FXXUAFWB6 T(Android 13) samsung firmware download all model, lastest, fast update, completely free and fast speed in Samfw.com ✅
samfw.com

the interchangeable cap make sense and also solve the imei trouble, i will choose to believe in your experience. But logically, then the email should be the one that is on the software right? and not in the cap? i already installed that version you told me, but how can i restore the signal? i just need to restore that and i will be able to sleep cause ive been awake almost 10 hours trying to figure out this mess

I really don't know if you can fix it.
I think your equipment was only rooted. The signal always worked.
I never touched the imei of your equipment.
It may even be that you are presenting a software error. once going to binary B. you will not be able to return to binary A.
if the problem does not recover without any update. It could be a problem with the internal antennas.
that they are disconnected.

I realized the problem, the case was switched indeed. And the original imei was changed because it was blocked. Since i update to the most recent binary and there is no chance to downgrade that, i wont be able to use sim cards anymore or at least until there is a new versión for patching the signal. I dont know which program the technicians use so i dont know if im ever going to recover the phone. An awful purchase and a even better movement from my part trying to update the android and removing the root. Im just disappointed, i hope this thread helps someone to not make the same mistakes...

At this point i dont even mind to pay for a signal patch, but there isnt a update for the system they use to do it. If someone knows anything about it, would be pretty helpful.

I understand what you're saying:
As a technician I understand.
Always before making changes, you have to know what we are getting into.
If you already knew that the imei was repaired and patched, for nothing in the world to update.
as advice, do not upgrade to binary B
stay in binary A.
The solution will come out, it always comes out for computers with an unlockable bootloader.
stay on february patch one ui 5.1 with binary A.
The rest are security updates.
Before listening to me, check that the system does not contain bugs.
in the best of cases, repair and sell, buy a G780G or G781B
luck.