I registered my bluetooth headset then had to delete it to pair with my phone for a little bit. I am now trying to pair it back with the PS3 and now it's not registering it. Can anyone help me!?
you always have to reconnect a headset if it's been paired to another device but you don't have to delete it from your ps3 - some newer headsets including the ps3 model 2.0 can pair to multiple devices simultaneously since you deleted it start from scratch .
use the same steps as before
put it in pairing mode
search and connect
check audio device settings to ensure it's set up properly
if it's capable of multiple pairings then next time you'd just have to reconnect it in the bluetooth devices menu