Finally did the 4.1 JB with LimeRa1n on my Mac tonight. Upgrading did not go too well. I had to stop the upgrade process and do the firmware upgrade on another Mac. I had to kill the process and do a restore. I do not use the sync feature to put music on my iPhone so I lost all the music on my iPhone. Later on I had to put it back by hand. I have over 200 playlists in iTunes so that was the hardest part. The reason for this post is the easiest part of this process and restore was installing Cydia then Pkg Backup. Pkg Backup restored ALL of my Cydia apps and tweaks flawlessly. Then SBOragnizer restored my Springboard. Kudos to the dev of both apps Jibril Gueye. Sometimes buying apps is worth it, sometimes not. In this case the few bucks for both apps saved me hours of downloading and reinstalling and then probably 20 or 30 re-springs.