yes you can, I am using mine with boost. Internet working, mms, emails, gps, the only thing that is working is PIN messaging and BB messenger. I have the file that makes it work. I don't know if Admin would let me upload it here.
Hello I am new here...I have a blackberry 8350i, and I am using it with the Boost mobile unlimited plan, I followed the instructions here, I created an account with psi, added gtalk to psi, but when I try to connect gtalk through my blackberry, it gives me the following message..."connection...