Develop Bugs

n920a change csc

hi, when i bought my n920a it had firmware 6.0.1 but with cs XSG of the arab emirates but now i can not flash this csc anymore. How should I do? also when I downloaded samsung flow did not make me use fingerprints because it said that I had done the root previously but I had already bought it so. Is there a way to root?

Are you sure your device was originally an N920A? And have you ever flashed the stock AT&T Firmware to your device yourself manually?
I ask it like that because, if you went and bought a Rooted N920A from an older firmware and then flashed a newer stock firmware to the device, you definitely removed the carrier unlocked modem and reinstalled the AT&T CSC. The firmware does try to prevent all other firmwares from being used.
You may end up needing to flash the modem from the combination firmware in order to regain your carrier unlock status, that may allow you to flash another region's CSC. But you would want to use a Home CSC version if you can. One that doesn't include the PIT file with it. The Home CSC version typically does not contain a PIT file but has a meta data folder that accompanies the cache image. The Home CSC also doesn't require a device wipe.
But if you accidentally locked your unlocked phone, I hope you didn't flash an unrootable bootloader over a rooted bootloader. But using the Combination Firmware's Modem/CP should allow you to change carriers and manually adjust APN or Cellular Settings. Although it may mess up your wifi defaults until you mess with wpasupplicant.

Thanks, I installed the latest firmware available NRD90M. N920AUCS6ERH1. Is it no longer possible to downgrade?

How to enable video calling on the u1 Note 10+ on MetroPCS

Just posting here to provide information on how to get video calling working on a Note 10+ running on MetroPCS. I am currently running N975U1UEU3CTE7 fw.
The goal is to download the fw for your model(in my case XAA (unlocked varient)) that matches the csc file from the T-Mobile fw(TMB) with the same baseband (TE7). You need to have the patched version of Odin (IMPORTANT). Plug in all of the files from your model in there prospective slots in Odin, all except for the csc file which will be replaced with the HOME CSC file from the TMB firmware. If you would like to keep your phone the way it is use the HOME CSC file, or if you would like your phone to be reset to factory use regular CSC file. Make sure that your phone is attached directly to your pc (not into any kind of hub) and put your phone into download mode. DOUBLE CHECK to make sure you do indeed have the correct firmware downloaded (N975U1 fw for Unlocked Varient and N975U fw for T-Mobile). If all is correct you may flash away.
Below are screenshots of video calling operational on my phone.
PHONE DOES NOT HAVE TO BE ROOTED

Flashing a AT&T SM-G988U1 update to SM-G988U USERDATA question

My AT&T S20 Ultra has been stuck on the G988USQU1ATBN firmware update. I haven't received any of the new OTA updates and was looking into manually flashing the latest update via Odin. If I were to flash the latest unlocked SM-G988U1 G988U1UES1ATFB update, that I downloaded from SamFirm, to my current AT&T SM-G988U, I would need to use the G988U's USERDATA in Odin to retain AT&T's carrier features like Wifi Calling and VOLTE or is it not possible to enable these features even with the USERDATA on a SM-G988U1 unlocked firmware update? I haven't had any luck finding the latest AT&T G988U update's USERDATA, only the ones from the "G988U and G988U1 Firmware Links and Flashing Discussion Here" topic's U firmware link.
Is it safe to use the ATT Feb 20, 2020 G988USQU1ATAW USERDATA from the U firmware link while I'm flashing the unlocked G988U1UES1ATFB update to my current SM-G988U in Odin? Its my first time flashing a firmware update to a Galaxy phone in Odin.

Shado713 said:
My AT&T S20 Ultra has been stuck on the G988USQU1ATBN firmware update. I haven't received any of the new OTA updates and was looking into manually flashing the latest update via Odin. If I were to flash the latest unlocked SM-G988U1 G988U1UES1ATFB update, that I downloaded from SamFirm, to my current AT&T SM-G988U, I would need to use the G988U's USERDATA in Odin to retain AT&T's carrier features like Wifi Calling and VOLTE or is it not possible to enable these features even with the USERDATA on a SM-G988U1 unlocked firmware update? I haven't had any luck finding the latest AT&T G988U update's USERDATA, only the ones from the "G988U and G988U1 Firmware Links and Flashing Discussion Here" topic's U firmware link.
Is it safe to use the ATT Feb 20, 2020 G988USQU1ATAW USERDATA from the U firmware link while I'm flashing the unlocked G988U1UES1ATFB update to my current SM-G988U in Odin? Its my first time flashing a firmware update to a Galaxy phone in Odin.
Click to expand...
Click to collapse
i dont think itll boot.. if userdata has verify bit set then flashing data from u firmware to u1 the vbmeta will not match.. u can try it tho.. it might work and just ask u to data wipe

Help updating to latest update
Could you help me please? I'm so lost on how to use this forum. I've got an sm-g986u on at&t, it's not got an update since June. I'm trying to update it via odin. I don't use a sim card in it as it's not my main phone so I can't get ota updates, and smart switch doesn't work either. I would just throw a sim in it but I guess I bought a blacklisted phone :/ anyway, if I use frija it detects a T-Mobile update for it, but it won't download. It goes for a bit and then drops to zero mb/s. I downloaded the update myself and when I enter the files into oidn, it freezes after I select the cp file and says not responding indefinitely. I just want to get this thing to one ui 2.5. I cannot find any guide for how to do this. Thanks for any insight you can provide. I'm going to try to find a way to make this into a post as well.

Galaxy S20 Ultra Verizon to Tmobile Flash Help

I have an unlocked, not rooted and factory OS Verizon(SM-G988U) with Android 10. I recently switched to T-mobile and was thinking to flash the firmware from Verizon to Tmobile to better use their wifi calling and other features.
Where can I get the latest files to flash the firmware? Also, to switch from Verizon to Tmobile, do I have to flash Verizon-->Unlocked(U1)-->Tmobile or can I do Verizon directly to Tmobile firmware? I read few threads but I was confused on what exactly I need to do.
I downloaded Odin v3.14.1 and latest Samsung drivers. Beside the firmware files and placing appropriate folders in BL, AP, CP and CSC, anything else I need to do?
Sorry for noob question but this is my first flash and was looking for exact steps.
Thank You

You need to go Verizon-unlocked-Tmobile. You'll want the patched Odin too. I use Frija to get my firmwares https://forum.xda-developers.com/t/tool-frija-samsung-firmware-downloader-checker.3910584/ but you can use sammobile as well.

Thank You. Is Frija 1.4.3 the latest version?
Also, the Odin I downloaded, the executable says "Odin3 v3.14.1_3B_PatcheD" which I suppose is latest and patched, right?
In the Frija, CSC, I got the Tmobile firmware as TMB. What is the code for the unlocked firmware so I can download it?

Also, do I need to root to flash the firmware from Verizon-->unlocked-->Tmob?

Noyou do not need root

In the Frija, CSC, I got the Tmobile firmware as TMB. What is the code for the unlocked firmware so I can download it?

Never mind found out.
SM-G988U1 , CSC- XAA for Unlocked
and
SM-G988U, CSC- TMOB for Tmobile.

Were you ever able to get WiFi calling to work?

Change Active CSC Code to Firmware CSC Code

I just got a galaxy s10+ from a friend who was on Tmoblie so it has the Tmoblie loading screen and apps. I would like to revert it back to the firmware CSC code XAA so I dont have to have the Tmoblie boot screen and apps. He didn't buy it from tmoblie its from an insurance company so I am pretty sure its unlocked. The app "Phone Info" says that Firmware's CSC code is XAA and the active one is TMB. I have tried to put in the *#272*IMEI# code into the phone but it just gives me an error code.
Is there anyway to revert it back to XAA without flashing the phone? Will I void the warranty if i flash the phone with official firmware? Also if I have to flash the phone where do I find XAA firmware as I only saw carrier firmware on SamMoblie.
Thanks for any help and very sorry if this has been posted a thousand times!
Also the phone model is SM-N975U / Galaxy Note10+
Device Type: d2q
Product Name: d2qsq
Bootloader Version: N975USQS6FUF1
CSC Version: N975UOYN6FUF1
Phone is on Android 11

I just flashed the phone and it all worked out. I used these threads to figure out the solution if anyone else is ever interested in how I solved this problem.
Note 10+ N975U carrier universal and unlocked models firmware.
Yep. I'm going to download the files just in case ,but wait a few days to see if anything happens.I'm curious if that was your issue all this time .
forums.androidcentral.com
Odin Files/Guides For S21
Flashing S21 Ultra t-mobile branded to unlocked? Hi Everyone, I am a new samsung owner. I recently got s21 ultra t-mobile branded. It is now network unlocked. But i wanted to have a clean bloat free phone so wanted to have unlocked firmware. As i understand it, i need XAA G998-UA firmware...
forums.androidcentral.com
And I used this very kind user on Androidcentrals help. The context of my question is not needed but I basically asked if I was choosing the correct files.
"Yes use the firmware from frija , you will also need prince comsey patched Odin which download from XDA website, this will factory reset your device for first time , choose XAA as region with model number from unlocked version. (He is refering to the model number SM-N975U1) Put the device in download mode and make sure using a good cable and try 7zip to extract the firmware,odin,frija ...then after extract the the firmware you going take for files Cp/CSC,Bl,Ap and put in corresponding slots in odin and flash"