Warranty Repair UK
My Ultra has had a small issue since new - a slight screen fault
Sony saying warranty refused due to "unauthorised software upgrade"
Only ever flashed FTFs meant for the device - bootloader is locked.
I have a copy of the TA partition so I may restore that.
Should I resubmit the device once I get it back?
What are your thoughts please? Can I challenge this "unauthorised software upgrade" nonsense?