What, specifically?No matter what I plug into them
Commissioning Tests to Verify a HDR-FOX
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- Regardless of which version of firmware you intend to use in the future, install the latest available Humax firmware (1.03.12 at the time of writing). Download and instructions available HERE (click), see "Official Firmware" and "Installing Firmware". Note: this is not pointless even if the firmware is up-to-date - it confirms those aspects of functionality right through from USB port to firmware execution.
There are two USB ports, one on the front (under a cover, lower right) and one on the rear (immediately below the Ethernet socket). It is unlikely the rear socket won't work, but if the front port isn't working that is likely to be caused by a broken wire in the cable which connects it to the main circuit board inside the HDR-FOX (it is not very well engineered, and has to negotiate a very tight bend which over-stresses the cable)..
Can't pin the blame on the seller, no, but you can nonetheless reject it.Can't really blame the seller is the unit seems fine in all other respects and MAYBE they were not aware of the usb problem