- Aug 6, 2016
Custom firmware, usually, either, can´t be flashed through Odin, or developer make them as a flash-able zip, unless we are talking about ENG firmware, I guess, it's not the case.Hello guys, hope ure all doing well.
I am having some issues with Odin and my Samsung s21 Ultra.
I tried to flash an up-to-date stock firmware via Odin as I was rooted but wanted to update. This did not work. Then I tried some other things like flashing a custom firmware via Odin, which also did not work. I tried unplugging everything other than mouse and keyboard and changing USB port / installing different USB drivers as well as different versions of Odin. No luck. Now I am stuck in download mode and cant even boot to recovery...
I keep getting the error "complete(write) operation failed". Any help is appreciated.
What do you see in the download screen?
Some message that can give you a clue?
Can you upload some screenshot from Odin, and link to that "custom" firmware?
Did you check that at the previous time to boot to download mode, the USB debugging and OEM unlock remained enabled?