Finally! I created a FreeDOS-based boot disk, and was able to flash the VAIO with the modded 2.1 BIOS using one of the "Flas**t" versions from your archive. I had to try several before I found one that worked. Win7 is now installed and successfully activated. Thank you!!
Sony Can I, please, ask the copy of your DOS base Flas**t version that work with your sony VAIO. Thanks in advance...