Best thing to do, probably, is to use FlashFix on the LiteOn EXE flasher. Or if you try to load a .BIN, follow dhc014's instructions on using LtnFW with bootcode.
Tried this, but Flashfix reports an error that there are too many firmwares in the .exe and that it only works with single firmware revisions.
*Edit: sorry for the 2nd response; seems like someone posted a response while I was still writing mine...
No need to apologise, any info is useful even if it is to tell me that I'm most likely stuffed - the drive is so new it's not even mentioned on Traxdata's website, they mention the Tx Uranus but not the Uranus 2