New to Windows Phone 8 (been flashing custom ROMs on Android phones for a few years). Got an unlocked (previous Rogers) Ativ S SGH-T899M from Canada and have been using it on T-Mobile for the past few months. I tried to update it to GDR3 via the "Preview for Developers" and the phone is bricked. It gave me a BSOD error during the update and now it won't turn on. I tried every button combination possible to reset it to no avail.
When I connect it to my PC, it comes up as a Qualcomm HS-USB QDLoader 9008 (COM3).
I've searched everywhere and it seems that there are no T899M ROMs to flash? Any ideas and help would be greatly appreciated it. I love my phone and don't want to get rid of it!