Motorola V3 bootloader?

The best answer for this is going to be found on Modmymoto.com. You will find all the files you need and software for flashing. they host several monsterpacks for different providers and many phones. Using information i found there i was able to flash 5 or 6 v3's to various providers. Which provider are you flashing from and to? You can use hacktherazr.com too and both the sites will list firmware or link to sites with it. You should look at those because you don't wanna brick your phone.