Hi ive just got a 7130g and want bbm messenger but i think i need to upgrade the OS but to do this i need the correct desktiop software, i have tried the newest one available on the blackberry site but it wont find my device. ive also tried using 4.2 but it doesnt seem to work on my pc it opens and crashes ( ive tried different download links) can some one help me or direct me to a working version of desktop 4.2? i think thats what i need. thanks.