I just downloaded the 1.50 firmware updater file. The uncompressed file (8N70OS_.PGM) is copied to my formatted flash drive. With the Montage powered off, I press the ^ Cursor and the Utility buttons simultaneously and powered on the board. As soon as the "Yamaha" logo shows up, I let go of the Cursor and Utility buttons. This message shows on the screen - the first line says "Searching for the Updater ... NG", the second line says "Press INC/No to Retry".
Any help will be much appreciated.