no, no todo soft se actualiza y es compatible esa es una verdad a medias osea que pues no es verdad, tendrias que usar una version diferente que tenga soporte para ese sistema operativo para muestras mira lo que dice sony:

MIS and Network Professionals can access and install individual drivers for the range of VAIO Professional Notebooks to meet specific needs and preferences. This could consist of locating drivers not included in the original package from the Original Equipment Manufacturer (OEM).

Model Unlocked drivers are provided for VAIO Professional Notebooks only. They can be downloaded and run on any VAIO Professional Notebook, but this does not guarantee the files will run correctly. The functionality of these files may vary by environment and are to be used at your own risk. Sony offers limited assistance for model unlocked drivers, provided at Sony's discretion. Contact Sony VAIO B2B Support at (88 476-6938.
y tambien dice :
Get updates and enhance overall performance with drivers suited for your specific need and notebook model.

VAIO Professional Notebooks are designed to work with the Original Equipment Manufacturer (OEM) version of Microsoft® Windows® with which they originally ship. Model Locked drivers will only run on a specific model and/or series. The lock is applied to the package to help preserve the functionality of the notebook as it was originally configured.
la pagina donde saque la informacion es aqui
es un hecho entonces que sony no te va a hacer valida la garantia si le pones otro sistema operativo yo deduzco que lo que te esta diciendo en otras palabras es que ellos tienen unas laps con el sistema operativo que quieres osea PAGA <- un nuevo equipo asi evaden la garantia <-- se esperan comentarios al respecto