You should not need to reactivate Vista. If you are happy with the 1302 BIOS I would stick with that, because the 1502 BIOS was more difficult to mod. They made the bios with very little free space and consequently more things had to be done in order to fit in the SLIC. If you do not need the extra features in 1502 I would stick with the mod you have. The prior version of the 1502 BIOS I modded resulted in a non-functioning motherboard. These mods are different, but again use at your own risk.