Probably bricked my Asus BW-12B1ST (LG) - looking for last gasp solutions

Tried a cross-flash using the various methods outlined elsewhere, and while my drive identifies as a BW-16D1HT, it can’t read any discs, much less write anything. Can anyone suggest, either with new posts or references to any here or elsewhere I might have missed, how I might try to recover it?

TIA

paperphile