Hi - Trying to update the firmware on an ST550 to the most recent official version using official Manhattan s/w. Tried a null modem cable thats worked on other receivers and the furhest it get is to display the boot loader version (version 3.2). After that the update program just hangs.

Mad up another null modem cable as per the upload instructions (pins 1-4, 4-1, 3-2,2-3,5-5) with the same result.

Anyone got a solution to this???