I have the same problem! I have now downloaded this upgrade 3 times. Carefully unzipped it (even ran up an old XP computer just in case) still unable to upgrade. My box clearly says HW ver B1 FW Ver 1 so think I am doing the right things. Any suggestions gratefully received. I have a second box (The cloud version just bought from Ebuyer) which upgraded with Rev A firmware first time so I am doing things right I think.
Many thanks for any suggestions although what they might be I don't know unless the download is in some way corrupted? THe download does seem very, very slow.
Rob.