so here it goes:
Im trying to flash Philz Touch recovery. I am already running an ancient version (5.15.9) and am now trying to upgrade it to the most recent 6.43.4 via Odin. However Odin (depending on the version) is either stuck at "NAND Write Start" or fails altogether (depending on the Odin version used). I can still flash the old recovery without any issues, but I cant upgrade to the new one, despite it being smaller in filesize (8201KiB vs 5461KiB).
I found some older threads with similar issues, but nobody could solve the issue and some users ended up destroying all other partitions as well...