Okay, I have a bit of an issue and done many days and hours of searching the interwebs and forums. I purchased another XTS5000 online that came from an auction. I read the radio, no problem. I go to program new things into it, and kicks back saying it cannot due to Advanced System Keys being present. I deleted the trunking system that was on it. I am wondering if this annoying issue can be solved through hex editor. I am a do-it-yourselfer and do not feel like shelling out the money to have this fixed by Moto. Plus, I don't get to learn in the process. I've programmed several of these, however this is the first I have run into this issue and it's an undesirable condition. I have the newest CPS, and hex editor. What can I do??