I've been using offline updates from XBUC for a while now, but ran into an issue yesterday I haven't seen before. It had been 7+ months since I updated my system so I figured I'd update several of my titles which include the following: Madden 13, NCAA FB 13, Rocksmith and Modern Warfare 3. I also updated several other titles, but updates for those titles went directly into the cache folder. The updates for Madden & Modern Warfare went fine, but the latest Rocksmith & NCAA FB updates were showing as corrupt on the usb drive. The only option is to delete the update from the drive. I hadn't previously installed an update for NCAA FB as there is only 1 update available at this time. I did however have the 2/5/12 TU from Rocksmith installed, but deleted it in anticipation of installing the latest update. After failing in loading the latest update for Rocksmith I figured I'd revert back to the 2/5/12 version, but when attempting to do so that version also now showed up as corrupt. I've had that TU on my xbox since February with no problems, but now I cannot put it back on. I formated and tried a separate usb stick, but got the same error. I also tried clearing the cache under drive maintenence on the 360, but that only deleted the saves in my cache folder as expected. Doing a quick search I couldn't come up with a similar experience. I am aware of the proper folder to place the TU in and the other issues like media ID, etc. My Xbox has never been on Xbox Live or connected to the internet in any way. I'm using LT3 and have a modified Western Digital 120GB hdd installed. I'm not sure if this can be traced back to a system update. Hopefully I'm missing something simple, but I'm basically stumped at this point. Any suggestions are much appreciated. Thanks!