I have a 7100t that was originally a T-Mobile phone that have unlocked and now I am using it on the Cingular Network. My question is Do I download the 4.1 handheld software from T-Mobile or Cingular to my 7100? Thanks for the help
It doesn't really matter. Personally, I download the latest available from any vendor (there is a very good sticky thread at the top of the General BlackBerry Discussion forum with a huge list of the carrier's web sites).
BTW - You can not change the branding (splash screen) from T-Mobile to Cingular.