Hi @ewblen I remembered your guide [HOWTO] (Needs expert review) Flash Galaxy s9+ to Stock Android 10 using heimdall-gui and you mentioned
This might be a useful way forward.
Of course we do not know the exact state of the phone, but perhaps what has happened is that the phone has done a Hard reset.
Samsungs being different from most devices might declare “Custom binary blocked by OEM Lock” the case being
- USB debugging got disallowed (so we cannot flash a Custom ROM)
- Odin and heimdall (I think this is the case) is able to communicate with it and flash a Samsung ROM.
If TWRP were included, would the “custom binary” be seen / challenged.
In “the other thread” @sam_uk made some progress trying to use HOME_CSC Samsung S9: Custom binary blocked by OEM lock - what about the files? - #40 by sam_uk