Was the bios LED still on? If it blinks 3-4 times and stops there is something wrong with the file. Happened to me when I went from 902 to 1002.
I reformatted my USB to FAT32 used the BRenamerl tool found on the support page under Bios utilities, moved it to the USB, downloaded 1107 on to USB
Ran BRenamerl and it renamed the file to CH6.CAP, Cleared CMOS before flashing, hit the button and it worked with no issues.
Be sure that there is nothing else on the usb drive or remove an encryption on it.
Keep us posted
Edit: Pulled all the other USB cables /devices then Bios Flashback suddenly worked! . I have successfully reverted to 0083.
Edited by residentour - 4/29/17 at 3:53pm