5.- Backup all the data that you want to keep safe with Blackberry Desktop Manager.
6.- Open BBSAK and press Wipe Device, This leve you phone with out OS and after reboot will show a error on a withe screen, is normal. (This delete everything in the phone) Do not Close BBSAK yet!
7.- On BBSAK press Load OS and Blackberry Loader will show up and just follow the instruction, the program automatically will install the OS 5.0 and the setting for the Verizon. (you can selecct all the application that you want in the phone, like languaje, Document to go and other).
8.- When the phone reboot it take like 5 to 6 minutes, looks like is freezes but ir normal just wait and it is all, after all this you phone will run OS Ver 5.
The OS Core is automatically update from the Boost firmware and the phone keeps the original configuration from verizon.