Plextor PX-891SAF Firmware 1.J7
For PX-891SAF drives with 1.Jx firmware.
http://www.cdrinfo.pl/bios/17021174907
Plextor PX-891SAF Firmware 1.V9
For PX-891SAF drives with 1.Vx firmware.
http://www.cdrinfo.pl/bios/17021175043
Plextor PX-891SAF PLUS Firmware 1.K7
For PX-891SAF PLUS drives only.
http://www.cdrinfo.pl/bios/17021175327