This worked well for me too -- thanks!! Here's what I did since I did not have a 2GB SD card handy:
[*] Copied WINCEIMG.BIN & WINCEIMG.CKS to the root directory of the SD card.
[*] Copied the testmode folder to the SD card
[*] Copied the back up files to a USB drive. (This is the large batch of files at around 1.6GB)
[*] Connected the USB drive to the USB port on the F90BT
[*] Followed the steps as described, but simply copied the back up files from the USB drive at the stage where you are in test mode using Windows CE. USB drives are generally faster than SD cards, but this is jus