If your using the same hackinit that nitrous posted, my guess is the order of the commands are not liked by TIVO. Try moving that sleep 60 seconds and fixsub to the end of your hackinit. Also add some echo "installing this or that " > /dev/ttyS2 commands to see how far you get. I would start by using the hackinit file MrBlack posted on the very first post, then add your additional hacks. Each time you modify your hackinit file just make sure you chmod it.