It probably has to do with the fact that Sleeper created a CD which made upgrading a 3.1.1 DTiVo easy (almost too easy). It used methods which were current at the time, but have since been updated to better methods. The CD did cause problems and people never learned what was going on behind the scenes. They just don't want a repeat. Having hacked a number of tivos using just about all of the methods out there, having a reasonable script does help. Remembering all of the commands and getting them done in the right order is a pain. (It doesn't help that I've got a wide variety of tivos which each has it's own unique issues.) I do prefer a full CD to point people at when they ask me. But, building a CD with the zipper script is not difficult and it encourages the person to get a backup CD for their unit which saves time and keeps the image begging down. Now I'd also prefer instructions for something other than Windows (not that I need them, I'm just very partial to my Linux boxen).