BenQ 1640 BSIB Firmware

I can’t seen to find a link to BSIB firmware for this drive. The latest is BSJB but I would like to try BSIB but it is not on their site. If someone could provide a link I would appreciate it.

BSIB fw available from:

This is the one I am using - BSIB.cvt

Thankyou for the link.