Hello, I've been looking at this site for a while and it has helped me a lot with learning how to use my new 8110.
As far as I know, ATT has not released a 4.5 os for the blackberry pearl 8110. I've tried to install many different versions of the 4.5 os from different carriers and each has failed. I have to reinstall a ATT 4.3 os to my phone in order to get it to function again.
My question is, Is there any incompatibility with my device and the 4.5 from other carriers?