If the original operating system is intact, the proprietary software (pre-installed) will automatically detect the BIOS version and download the correct patch.
EP0000550988.exe Version: R0210W9 Date: March 15, 2012 Source: Sony Europe Legacy Vault (Archived)
Let me know which (starting with VPC ) is listed on your screen bezel or system info! BIOS Update Utility (Windows 10 64bit, Windows 8.1 64bit)