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Can't flash firmware

So,
Today I flashed the UK BTU firmware (G920FXXU3COI9). However, when I extracted the file it had 4 files for AP, BL, CP AND CSC so I used them all. However, now I can't go back to my previous firmware (G920FXXU2COH5) because when I try flashing it with Odin it says on the phone: sw rev check fail.
I want to go back to this firmware because I have a Nandroid backup with all my stuff and it doesn't work when i try to restore it on the new firmware. Can you help me with the right file to flash? Do I need the CSC file of the old firmware as well? Can you help me please?

How to fix system rev. check fail device: 2 binary 1 error when flashing a custom 5.1.1 ROM
If this error has appeared after flashing the new Bootloader and Modem for BOFJ
Download this: https://mega.co.nz/#!E05hTYaS!_vad3fvvKCwWiMmgWGrGgc69KYdgYRa1wFCmxYzwH3s
(Stock 5.1.1)
Once installed and passed with ODIN (Flash as AP)
Power off the phone and boot into download mode
Once in download mode flash the latest TWRP 2.8.7.1
http://forum.xda-developers.com/showpost.php?p=61548356&postcount=570
After flashed you'll be able to boot into recovery and flash your custom ROM ​
This post was taken from this thread

$tefanDroid said:
How to fix system rev. check fail device: 2 binary 1 error when flashing a custom 5.1.1 ROM
If this error has appeared after flashing the new Bootloader and Modem for BOFJ
Download this: https://mega.co.nz/#!E05hTYaS!_vad3fvvKCwWiMmgWGrGgc69KYdgYRa1wFCmxYzwH3s
(Stock 5.1.1)
Once installed and passed with ODIN (Flash as AP)
Power off the phone and boot into download mode
Once in download mode flash the latest TWRP 2.8.7.1
http://forum.xda-developers.com/showpost.php?p=61548356&postcount=570
After flashed you'll be able to boot into recovery and flash your custom ROM ​
This post was taken from this thread
Click to expand...
Click to collapse
Yeah I saw that, but the Mega download link is invalid

Merry Xmas to all
I have an g920i not rooted , flashed a TTT firmware 5.1.1. (trinidad and tobago) and now the phone cant get 4G networks
all seem to look fine but there is no way to flash an previous 5.1.1. firmware (Mexico TCE) which has the 4G running smooth
Odin pops an NAND write fail error, and i cant get beyond that point
any ideas?

Flashing only AP File

Hi guys
i got S7 930FD XSG,
Rooted using this Method [Recovery][Exynos] Official TWRP for Galaxy S7 (herolte)
Somehow mistakenly Turned off OEM
Device locked, Reinstalled Stock ROM using "Smart Switch"
Again rooted by above method.
Now OTA updates aren't available.
So I have two question, actually one confusion and one question.
As when i reinstalled ROM using Smart Switch, in Smart Switch it says "930F" instead of 930FD, while is device info it say 930FD.
1. are there same or single system/OS for both version ?
If yes, then can i install ROM of 930F XSG, with same AP and CSC of My device, i am attaching screenshot to share more info...
View attachment 4057525
View attachment 4057526
2. If answer to 1st question is yes and safe, then can i just Flash only AP file, leaving BL, CP, CSC etc ?
I just want to get latest update (either via Odin or OTA)
Regards

No help ??

Have a look in download mode what it says the device is, flash all 4 part of the ROM using ODIN 3.12.3
CSC will reset the phone
HOME_CSC will not
If you are upgrading or downgrading Android versions, use CSC to avoid problems

G930FD uses the exact firmware that G930F uses. So yes, they're the same.
Flash BL, AP, CP and CSC file (not HOME_CSC) if you want to return stock and have OTA updates. Remember this will format your phone. It's later up to you whether you want to root again or just remain on stock.

samsung g955u partcyborg to stock results in Efs failed to mount , dm verity

I recently had my samsung s8+ snapdragon on partcyborgs rom . when i decided to go back to stock i flashed the rom and it ends up in a boot loop where it installs a update to 25% with a error. When i go into recovery it says efs failed to mount, dm verity. Any suggestions to what i can do.

flashsugar said:
I recently had my samsung s8+ snapdragon on partcyborgs rom . when i decided to go back to stock i flashed the rom and it ends up in a boot loop where it installs a update to 25% with a error. When i go into recovery it says efs failed to mount, dm verity. Any suggestions to what i can do.
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Click to collapse
ur csc is bad, had the exact same thing a year ago,
just install twrp again
flash csc pack (if there are csc packs for snapdragon variant), flash any csc u want , i did it twice just to be sure
and after that go flash stock firmaware with same csc code
so if you install btu csc then flash the btu firmware with odin afterwards,
dont flash the home_csc .tar in odin just choose the normal csc thats in ur firmware folder
hopefully this works for you too mate

SOGKush420 said:
ur csc is bad, had the exact same thing a year ago,
just install twrp again
flash csc pack (if there are csc packs for snapdragon variant), flash any csc u want , i did it twice just to be sure
and after that go flash stock firmaware with same csc code
so if you install btu csc then flash the btu firmware with odin afterwards,
dont flash the home_csc .tar in odin just choose the normal csc thats in ur firmware folder
hopefully this works for you too mate
Click to expand...
Click to collapse
i don't have twrp because i don't have a unlocked boot loader

flashsugar said:
i don't have twrp because i don't have a unlocked boot loader
Click to expand...
Click to collapse
damn, well i dont know what you can do then maybe try combi frimware, should have root acces add see if you can flash that way?
dunno just trying to help

Factory resets and try to flash the rom again I don't think it's a baseband issue like exy.
Make sure what needs to be clicked in Odin from the instructions are clicked too

Still having problems

....

Can I flash modem only with Odin?

Can I flash only the CP file (from original Samsung S8 pie firmware) with Odin (without BL, CSC, AP)?
Just want to update the modem only without losing everything on the phone.

forcedv said:
Can I flash only the CP file (from original Samsung S8 pie firmware) with Odin (without BL, CSC, AP)?
Just want to update the modem only without losing everything on the phone.
Click to expand...
Click to collapse
Yes, what you are trying to do is frequently done by Samsung users. You can extract the modem from the firmware and convert it into an Odin flashable .tar.md5 then flash it via Odin in the AP slot.
Sent from my SM-S767VL using Tapatalk

Need Oreo bootloader and Modem

Hi, I have a Samsung Galaxy J7 Prime SM-G610Y variant running android 6.0.1 J7 Prime stock tw firmware. I already installed twrp and want to install a custom rom, the problem is majority of roms i found require an oreo bootloader and modem, i have a stock bootloader and modem so there's no way i can flash those roms, i really need the files and the instructions on how to upgrade the bootloader and modem, please help me everyone.

Maple_tree said:
Hi, I have a Samsung Galaxy J7 Prime SM-G610Y variant running android 6.0.1 J7 Prime stock tw firmware. I already installed twrp and want to install a custom rom, the problem is majority of roms i found require an oreo bootloader and modem, i have a stock bootloader and modem so there's no way i can flash those roms, i really need the files and the instructions on how to upgrade the bootloader and modem, please help me everyone.
Click to expand...
Click to collapse
You can get it in samfw.com . Download the latest rom for your device. Download odin tool. Unzip the rom for your device, you will see four file ap, bl, csc, cp(ignore home csc) put each of those files in odin, then reboot your phone download mode, then install samsung usb driver, and the connect your phone to your pc, and then click start. after that you can install orangefox recovery for your phone(twrp is outdated for this phone). Also most roms for this device above android 9 are treble only(except lineage 18.1), so install project spaget x from twrp and then you can flash any rom you want.

santhosh ravi said:
You can get it in samfw.com . Download the latest rom for your device. Download odin tool. Unzip the rom for your device, you will see four file ap, bl, csc, cp(ignore home csc) put each of those files in odin, then reboot your phone download mode, then install samsung usb driver, and the connect your phone to your pc, and then click start. after that you can install orangefox recovery for your phone(twrp is outdated for this phone). Also most roms for this device above android 9 are treble only(except lineage 18.1), so install project spaget x from twrp and then you can flash any rom you want.
Click to expand...
Click to collapse
Will my device experience bootloop because the csc is not my home csc for this phone, i need reassurance, and is it possible that i only flash the BL, i'm going to install a custom rom anyway?

Maple_tree said:
Will my device experience bootloop because the csc is not my home csc for this phone, i need reassurance, and is it possible that i only flash the BL, i'm going to install a custom rom anyway?
Click to expand...
Click to collapse
its very unlikely that it would bootloop, but it might boot loop if you install only the BL