: Go to the official Sony support website. You can find it by searching "Sony support" in a web browser.
INITIATING ZERO C PROTOCOL. WELCOME, OPERATOR. download sony blu ray zero c upd
Go to https://www.sony.com/electronics/support/downloadelectronic → Search for your exact model number → Filter by "Firmware." The file you need is there, even if it’s not called "Zero C." : Go to the official Sony support website