Support phone not going past t-mobile screen

view full story

http://androidforums.com – hi guys, i recently started to update my htc desire s to the new 2.3.5 but after a power failure my phone will not go past the t-mobile screen, ive booted using the volume buttons bt can't seem to do anything on there either, when i try to factory reset all i get is the update screen but then it goes to a picture of a phone with a red warning triangle, im absolutely lost and i dont have a phone to set me on till i get this fixed plus no insurance :/ thanks for any help :) (General)