ok i have the bb 8100 and it had 4.2 os installed everything worked bluetooh worked perfectly. i downloaded the 4.5 os for the 8100 of the black berry website and i can still send files with bluetooth to people who i have paired from the past but when i try to pair with new people it wont pair. it pairs in there phone but it tells me unable to pair with so so. could it be the os? any way to fix it?