i have a bb 8110 thru at&t , i had the 4.3 os and was trying to upgrade to the new version 4.5 so i could watch youtube videos but now i have totally messed up my bb.it will do anything the red light flashes and the screen is black wont do anything can anyone tell me what i can do i will even put the old 4.3 os back on it if can i am really pissed at my self. when i oprn dm it does not even reconize my bb. HELP PLEASE ASAP!