You can flash the firmware of the same model definitely(SM-G990B) However, I don't suggest flashing the firmware of another model. Like what you have said, it is probably Exynos and you cannot flash it. If you are quite sure your model is simular to another model, you can use the patched Odin to flash the firmware
Thanks Will... nice to meet you. I am currently running the EUX version of the SM-990B, but the android 11 variant. What you suggest I flash the EUY or the EUX variant of android 12, to get samsung pay working. You see I am kinda of thinking that Samsung pay for android 12 may pick up that I am in South Africa and authorise the app. Probably won't but there is a possibility. However if I flash EUY, its could be closer to a global version, rather than the European Union version... all guessing but maybe someone here has tried this... bear in mind I don't want to void my current warentee...
There are no way to unlock the bootloader of the US model. I think the way they lock the bootloader is using two bootloaders. One of them permanently US model’s bootloader. Another one is firmware’s bootloader. I think they use this way to prevent users to unlock the bootloader.
I think you haven’t use Samsung device before. Samsung don’t have fastboot mode, you see. The only way to have fastboot is by the way of using some AOSP roms with proper fastboot support, like PHH’s
No. You can undo most of the process, including flashing back stock firmware and recovery, but you cannot revert bootloader to the factory locked state, relocked at best. They will know.
Yes, rooting WILL trip/blow the KNoX fuse. It doesn't "trigger knox" but the fuse itself.
NO. Once again, knox is not what you think. It is a complex system consisting of BOTH software and hardware components. Among many components, it has a physical FUSE inside the SoC (ie. the snapdragon or exynos chip) which will be tripped/blown once knox detects such an intrusion. There is absolutely no way to undo this, and there never will be, as such a trip operation physically changes ("damages") your chip. It of course doesn't damage it really but leave a permament mark and from that point on, warranty is void and many security features that depend on knox will not work. You can even see this change with a powerful microscope. (Just google it)
That is absolutely not worth it in my opinion. Just do it on an emulator or on an old phone and harvest the keys. Many 2FA auth gen apps now offer migration methods, and even if it doesn't, there is always a way.
NB. OEM unlock and bootloader unlocking are two very different things. Perhaps the first one is already done/not needed if you can't find it.
If you root, install custom recovery or any unofficial samsung software you will break knox.
Towelroot probably used an exploit that is probably patched in today's more current fw.
Xiaomi user
Your warranty is now void.
If you root your device, Your KNOX status will be tripped.
You can still pass the safety net after you root if you follow the instructions.
I am not responsible for bricked devices, dead SD cards although it is not really possible
Please do some research if you have any concerns about doing this to your device
developer.samsung.com
My S21 FE is rooted and camera still awesome. Don't know what you mean by broken but all I need is working like it should (pictures, vidéo, zoom, effects, pro...). To me, you can root without fear
