@edit - Sony BIOS for new Z (VPC-Z) is now 0WNED!
@edit 2 - For even more advanced options (Overclocking, undervolting!!!) it is needed to disassemble setup executable to figure out where are those items stored. They are definitely inside the setup, but are not accessible even with this unlock.
VSS register which controls advanced menu is now: 0x258 (for old Z, it was 0x25A) - in advanced menu, you can configure SATA controller to IDE/AHCI/RAID, change lots of advanced...
Insyde hacking - New Vaio Z - Advanced menu in BIOS
@edit 2 - For even more advanced options (Overclocking, undervolting!!!) it is needed to disassemble setup executable to figure out where are those items stored. They are definitely inside the setup, but are not accessible even with this unlock.
VSS register which controls advanced menu is now: 0x258 (for old Z, it was 0x25A) - in advanced menu, you can configure SATA controller to IDE/AHCI/RAID, change lots of advanced...
Insyde hacking - New Vaio Z - Advanced menu in BIOS