I have received an isolated report of an HDR-FOX which would not tune channels with 1.02.20 installed instead of 1.02.29. I bought another HDR-FOX (No2) relatively recently, and it arrived with 1.01.09 fitted so it must have been kicking around in stock for a long time. However, there is a possibility that units actually manufactured recently have an updated tuner installed (perhaps because of unavailability of the original part) which requires some difference in the control codes that are sent to it*. This might explain the roll-out of firmware 1.02.26, never seen as an OTA or on the beta site, with the necessary tweaks to operate the new tuner. Subsequent firmware distributions would have to be able to run both versions of the tuner, either by detecting which version it is and sending the right codes, or by using codes which are compatible with both. Note this is only a hypothesis at the moment, to explain one observation. Further reports and experiments are required before it becomes accepted fact. If true, owners of such units have no retreat to 1.02.20 to eliminate the enforced retune problem. * Electronics modules such as this are usually controlled by a serial interface to the control processor.