View Single Post
Old 12-18-2008, 09:35 AM   #46 (permalink)
Stuck In The '70's Mod
ndub33's Avatar
Join Date: Feb 2006
Location: The 'burbs east of Seattle.
Model: 9810
Carrier: T-Mobile
Posts: 7,600
Post Thanks: 0
Thanked 4 Times in 4 Posts

Welcome to the Forums!

It sounds like you have a T-Mobile device that had been previously upgraded to an ATT OS. Pretty common, and nothing wrong with that. Upgrading your OS shouldn't do any harm to your unlocked status.
As far as limitations, it depends on your carrier and the OS version you decide to upgrade to. Most of the time there are no issues at all, but occaisionally, a carrier will not provide the Service Books for another carrier's OS. This could limit your web browsing capabilities as well as have an impact on other features.
This is pretty rare, however. I would suggest you try it, if things aren't working right, you can roll back to your previous OS. The link below should help you with this:

How do I downgrade the OS on my BlackBerry? - BlackBerryFAQ
1st Step in Troubleshooting: Do you have a BlackBerry Data Plan?
2nd Step in Troubleshooting: Pull the Battery.
Offline   Reply With Quote