[Q] Can i flash custom firmware of SM-G900R6 in SM-G900R7 - General Questions and Answers

Hi,
Actually i want to flash compiled kernel zImage to samsung galaxy S5 SM-G900R7. When i am flashing phone is not booting with that image. Looks like there is some signature checking is happening. so i want to flash phone's firmware files with internet downloaded custom firmware files with a hope that there will be no signature checking after that and i will be able to flash my zImage on top of that. But i am not getting custom firmware files for my model, I am getting firmware files for many models and getting firmware for SM-G900R6. So i m thinking to flash phone with SM-G900R6. I checked in specification of both almost same but i still want to take help of XDA developers team to get confirmation before flashing.

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N8010 with n8000 bootloader odin question

Hi all, so like a lot of overzealous flashers I loaded up the early release kk rom and flashed the n8000 bootloader on my n8010. Now I would like to reflash my device with a original firmware with odin. But as most of you know you can't flash original 8010 firmware if you have the 8000 bootloader... I saw somewhere that I could unpack the original rom and remove some files then repack it as a tar file for flashing through odin.
I can't find the original post so I was hoping someone could help me with the info about what I need to remove from the factory Img...
Thanks
torchwolfery said:
Hi all, so like a lot of overzealous flashers I loaded up the early release kk rom and flashed the n8000 bootloader on my n8010. Now I would like to reflash my device with a original firmware with odin. But as most of you know you can't flash original 8010 firmware if you have the 8000 bootloader... I saw somewhere that I could unpack the original rom and remove some files then repack it as a tar file for flashing through odin.
I can't find the original post so I was hoping someone could help me with the info about what I need to remove from the factory Img...
Thanks
Click to expand...
Click to collapse
+1 plz. If there is a way i wanna do it
Sent from my SGH-I337M using XDA Free mobile app
That makes 3 of us
Would really like to get my 8013 back. Any ideas?

Flashing Firmware / Bootloader / Modem

Hi,
I´m a neewbie to Samsung. My phone is a S6 SM-G920F, Baseband G920FXXU1AOCW
I came form an HTC and I´ve seen that flashing things are very different. So here are my questions:
1. I think, my bootloader is unlocked but I didin´t know for sure. So how can I check this?
(My HTV showed me this by using fastboot, didn´t know if there is fastboot with Samsung and how to start it - only know the download-mode and how to enter TWRP recovery)
2. Flashing firmware via Odin (i. e. from sammobile.com) means to loose my root again, right?
3. If I loose root, where do I get custom Firmwares and how do I flash them (if this is possible)?
4. If not, is it enough to flash bootloader and modem through Odin?
All answers are appreciated. Thanks in advanced.
Maybe someone can link me to an step to step instruction...
Fastboot is android doesn't matter who makes the phone.
If you flash a rom from sammobile then you will go to whichever stock you pick.
Other ROMs are available here. The phone is new. There aren't many yet. Cyanogen mod isn't available yet.
Root is available by flashing cfautoroot with Odin. You will need to get the specific one.
You can replace the recovery by flashing twrp team win recovery project with Odin.
You can flash boot loader and modem. Make sure you get the right region. The modem frequencies are different in different places.
You may find flashing a whole ROM even stock will fail. This is because the partitions are not the same size for all s6 stock ROMs. Don't ask me why. You can open the tar find which file stopped the flash delete it from the tar and flash again.
quatzar said:
Fastboot is android doesn't matter who makes the phone.
If you flash a rom from sammobile then you will go to whichever stock you pick.
Other ROMs are available here. The phone is new. There aren't many yet. Cyanogen mod isn't available yet.
Root is available by flashing cfautoroot with Odin. You will need to get the specific one.
You can replace the recovery by flashing twrp team win recovery project with Odin.
You can flash boot loader and modem. Make sure you get the right region. The modem frequencies are different in different places.
You may find flashing a whole ROM even stock will fail. This is because the partitions are not the same size for all s6 stock ROMs. Don't ask me why. You can open the tar find which file stopped the flash delete it from the tar and flash again.
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Click to collapse
Thanks for answering. My questions had an other intention, I think.
My S6 is already rooted and I have a custom recovery (TWRP) :good:
I would like to know if you have to flash a whole firmware or only bootloader/modem? Because I didn´t seen a post here for a full firmware yet.
I am not familiar with the differences between htc whole firmware and samsung bootloader/modem
Actually I am on Firmware G920FXXU1AOCW. But there are newer ones like XXU1AOE3 or XXU1AOE4.
In the days of my htc you couldn´t flash only bootloader or modem, you had to flash a whole firmware (like radio, drivers, bootloader, modem etc.)
Flashing only modem and bootloader will it update i. e. touchscreen drivers? If not, where do I get this ones? You know, because of root I don´t get OTA´s anymore...
The modem just controls how your phone hardware connects to carrier towers etc.
The boot loader is a tiny thing that tells the processor where and how to load the OS.
The software for pretty much everything is in /system.
Many of these releases are the same software, region specific. The dates are fairly unimportant for the same version number. They generally reference the time when they were uploaded by someone. Not that they have updates and fixes.
Just wanted to know can I change my phone logo MetroPCS to say T-mobile with all the T-mobile add on. I have a Samsung Galaxy s6 by MetroPCS

soft brick Gm 920f

Hi i wanted to flash a custom marshmallow rom i was rooted and custom rom already but when i flashed the rom it didnt opened so i tried to flash a stock rom GR from sammyfirmware but it dosnt pass it fail in the start i read somewhere about a fix with the sammy roms that dont pass that you must rename the hidden.img to hidden.img.tar does anyone can help me or has anyone rom with seperate files of csc , modem and etc ...
manouvras said:
Hi i wanted to flash a custom marshmallow rom i was rooted and custom rom already but when i flashed the rom it didnt opened so i tried to flash a stock rom GR from sammyfirmware but it dosnt pass it fail in the start i read somewhere about a fix with the sammy roms that dont pass that you must rename the hidden.img to hidden.img.tar does anyone can help me or has anyone rom with seperate files of csc , modem and etc ...
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Click to collapse
Hi,
What is the exact error you get? Which firmware version you tried from sammobile?
manouvras said:
Hi i wanted to flash a custom marshmallow rom i was rooted and custom rom already but when i flashed the rom it didnt opened so i tried to flash a stock rom GR from sammyfirmware but it dosnt pass it fail in the start i read somewhere about a fix with the sammy roms that dont pass that you must rename the hidden.img to hidden.img.tar does anyone can help me or has anyone rom with seperate files of csc , modem and etc ...
Click to expand...
Click to collapse
ROM didn't opened because it might have got corrupted while downloading try redownloading it, By the way ROM isn't opened its flashed by any custom recovery.......
In case of stock ROM did you tried Odin and flashed the full zip (tar) file ?

Using SM-G20T on AT&T (which CSC?)

I got a T-Mobile S6 from a friend, and I'm trying to do whatever I can to enable using it on AT&T. I think a custom ROM might be nice, but I'm stuck on this CSC business.
It was weirdly flashed before, so I flashed it back to stock using Odin and a recent image from sammobile.
The image was G920TUVU5FQG3_G920TTMB5FQG3_TMB
Device: SM-G920T
Android Verson: 7.0
Baseband: G920TUVU5FQG3
Kernel Version:
3.10.61-11187574
[email protected] #1
Any advice is appreciated. I'm confident enough to flash TWRP and other things on the phone. (I've done some NAND hacking in my day.)
I'm just lacking some concise instruction/direction.
I assume I need to
1) Flash TWRP using Odin
2) Root the phone by flashing SuperSU or Magisk
3) Flash AT&T compatible ROM using TWRP
What am I missing with the CSC stuff? Do I need files from somewhere? When I tried to go through the install for "Ultimate Nougat 2.0" I got stuck on the which CSC, because it didn't appear to have a CSC compatible with AT&T/USA.
The goal is to use this phone on AT&T, hopefully with a decent debloated ROM that is as close to native google android as possible and doesn't have any vendor nonsense.
Thank you for your time.
You don't need to do anything regarding to CSC stuff.
Just flash TWRP and do whatever you want to do.

Can't flash stock firmware

Hi! A while ago I decided to flash TWRP and a custom rom (LineageOS) onto my S7. After a while I decided that I would prefer the stock OS. So I tried flashing the stock ROM with Odin and a zip file downloaded from SamMobile. But it would always fail when it got up to flashing system.img. So I tried another firmware using SamFirm, the same problem persisted. So I tried flashing the stock ROM using FlashFire, but no partitions showed up. Smart Switch and Kies 3 just said that my device is not compatible. If anyone can help me, it would be massively appreciated.
P.S. I am doing everything right, I've done this exact process on many other Samsung phones.
Are you extracting the AP, BL, CP and CSC files from the zip, or just putting the zip straight into Odin?
MuscularCrab said:
Hi! A while ago I decided to flash TWRP and a custom rom (LineageOS) onto my S7. After a while I decided that I would prefer the stock OS. So I tried flashing the stock ROM with Odin and a zip file downloaded from SamMobile. But it would always fail when it got up to flashing system.img. So I tried another firmware using SamFirm, the same problem persisted. So I tried flashing the stock ROM using FlashFire, but no partitions showed up. Smart Switch and Kies 3 just said that my device is not compatible. If anyone can help me, it would be massively appreciated.
P.S. I am doing everything right, I've done this exact process on many other Samsung phones.
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Click to collapse
please post the error showing in Odin

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