i know that phoneix not have box... but it's a sw who flashing BB5.
becose in last time i get manyyyy bb5 died on Update service - not go in local/test mode becose have sw errors.
like some n96/e51/e66 models. Must to erase and flash phone to get in local mode, but only RPL (crt) can make backup, becose phone doesn't go in local mode - pm is not available for backup