When is TMobile getting pie ??

[jimd1050]

Yes same

If I run that T-Mobile CSAA to CSB3 Update file on my AT&T phone Mustang, it won't screw up any of my AT&T settings?

 

[mustang7757]

If I run that T-Mobile CSAA to CSB3 Update file on my AT&T phone Mustang, it won't screw up any of my AT&T settings?

No you'll be fine just a update to feburary patch and some bluetooth fix and compass.