Interesting. I'm surprised any of these companies have continued development on US boxes. Best Buy wants a pretty penny fot this one ($60).
I noticed Best Buy states "Compatible with most analog televisions and recording devices" leading me to wonder if it has a VCR timer? (I don't recall if the older models had that feature).
Is your ION station VHF or UHF?
I don't know if this will help but my Zinwells update scan in a 'hidden' fashion: In Auto Scan it asks if I want to delete the existing channels, I press No and it update scans; this isn't mentioned in the manual, I discovered it by accident. What's weird is it has a Manual Scan mode too.