So... this device is quite new and there's no TWRP yet so I tried searching on how to build Twrp from scratch. I researched a bit to find a device with the same CPU as I could try to use it as base. My research then led me here
.It seems that Samsung uses 2 Vbmeta and the second one requires it to be signed using a method unknown to me.Further research points me to a Magisk issue
that hasn't yet been resolved.
My question is,. are there any "Top-level developer" working on TWRP for this device? It seems that without TWRP custom ROM development is severely halted.