Making this thread for future searchers.
I was going through the board lurking and searching for Verbatim users with successful firmware flashes. No luck except for 2 users posting how they killed their drives.
I figured I’d try my luck and it worked.
My drive: VBT401248A
MTKflashed to LTR-40125S firmware then to LTR-48125W firmware. Hmm, now that I think about it, could I have just flashed directly to LTR-48125W firmware? Oh well, it worked either way.
Burned 800MB SVCD in 2.5 minutes.