Don't know why it won't get the updates any longer. You might try reversing the slave set-up and try slaving the Coolsat from the 922, I would, actually I do. If that don't work or even if it does, you can put the sat on G1/G15 channel 3 (or a virtual channel) and press options, 6 , 0, 5, and if necessary enter your password (master-92121) if not go to Diagnostics F page, press info, press guide, it will change to guide showing a search, go back into options, 6, 0, 5, enter password again if necessary, if not, go to Diagnostics F page and watch the screen, on the 4th line down, 3rd or 4th column over is your memory, mine is a 920 and shows 860, yours being a 922 is probably more/bigger, on the 3rd line down, in the same column over, is the actual memory, you are waitng for the count from this line to get below 50, mine has gotten as low as 4 and a few times just above 50, at 52-54 and would not get any lower, usually it's around 40-46, once you see it stop moving and it's at 50 or below, you're finished and the guide should be working, if it's the guide you're trying to get. If you trying to get the channel maps, this probably won't help. Hope this does you some good.
Al