I just received the QAM updated firmware from Mediasonic and believe I updated the firmware correctly, but I don't see any choice to select Air or Cable. Can anyone tell me what screen this should be on?
There should be a "Signal Type" option under the Channel Search menu, just above "Modulation."
If it's not there, either your firmware update didn't "take" or the updated firmware isn't QAM enabled. You can check your firmware version with the "Information" option under the System menu. The SW version should contain "QAM."