Guys,

I want to know if installing an O.S. from another carrier is a risky decision. I have a Blackberry 8700g from TIM Brazil, and the O.S. still on version 4.1 and I can't enjoy the features of the newer versions.

Thanks.

I haven't had any problems. I have the 4.2.1.101 from AT&T (I think) and I am on T-Mobile. All the OS's come from RIM anyway, and then the carriers decide if they want to release them. There are some that MAY cause issues. The most recent incident that comes to mind is where users of unlocked BlackBerry Curves have trouble installing certain OS versions while on T-Mobile.

I agree with Jeremy. I've installed all different carrier's OS's on my BB and have never had a problem. They are all created by RIM and will all work. Generally, they have cumulative bug fixes as the version numbers go higher.