You should try on XP or win 7..but on the other hand, you don't even need a PC connection for unlocking as you can use unlock script which works entirely from the SD card. Here try this:
[Only registered and activated users can see links. ]
unrar and copy all three folders (Slide, Progs, TATA3_T5026) on the root of the SD card. Reset and your device should boot into a new menu.
Bookmarks