Although DISH Network was quick to assure customers that their DVRs would stay functional
after losing its patent appeal against TiVo
, it looks like the company was a bit quick on the draw. Although the majority of the company's DVRs have had their software updated to include non-infringing code, the VIP 721, 921, 942 and Homezone 1022 boxes haven't been updated and installers are being told that they can no longer install or activate them. You're safe if you've already got one up and running, but if you were in the market for a specific box, it's probably wise to double check those numbers.