Cross-flash from 812S to 832S not working

Hi all,

After reading up here, I’ve tried several times to cross-flash a friend’s LiteOn 812S to an 832S, using the correct already patched firmware, and then taking the stock firmware and patching it myself with Omni. Either way, it comes up the same; the drive continuously flashes amber once the flash is done, and doesn’t work until I flash it back to an 812S. Anyone know what the issue could be? Do I need to try MKTFLASH or is the drive just permanently stuck as an 812S? I use an NEC myself, but the LiteOn procedures seemed pretty straightforward. Any help would be appreciated.

just flash with this firmware: