Yeah you don't have to flash the bios to use it. If you are going to be using it, it is best to flash to spiv's muilt firmware which includes it. My take on windups is that it is somewhat cool to look at but really not that functional. I was scared to flash my firmware but I had read so many posts about succesful flashes that I decided to try it. Flashing works fine with spiv's multi firmware, the software is rock solid and works fine the olny problem you might find is running out of batteries or turning off porwer before finishes. I suggest that if you like windups (which I hate) try spiv's firmware. It includes pacrom(which I love), pacrom does not alow the customization that wind ups does but it is by far the most functional firmware out. It's not the best looking but who ever created pacrom really had there stuff together then it comes to creating amazingky functional firmware. Either way che out spiv's firmware I promise that flashing with it is safe if done right as can the countless other posts. That way you can get the most of windups(blah) or can load pacrom on boot(woo) or the original firnware with no boot screen(woo).