Neither Channel Master (currrent Pal seller) nor Rovi (who acquired TVGos) will provide firmware to enable internet connection of the Pal with TVGoS. From TVGos's perspective, the profit is in making you buy another product with an internet version of TVGoS. Rovi sees the internet connection as the future for multiple forms of entertainment media. So with the Pal we're stuck with PSIP data only. Thank goodness for that PSIP-averaging clock. And for stations responding to the need. My former TVGos station immediately expanded PSIP to 4 days, and when I looked today, they are within a few hours of 7 days, actually more than I got from TVGoS. Yay! Hope other stations follow their lead.
Internet providers of guide data are generally third party providers, and without contracts specifying the length of their obligation, consumers have the same problem we did with PSIP-based TVGos. Channel Master CM7400 has an un-named third party provider, who contracts with customers once a year, but I believe the fine print gave them an escape clause, so that's not very reassuring. Rovi is another third party provider of guide info for their own products, but presumably they have a larger reach to other manufacturers.