bill I don't have this problem, but how about uninstalling it by going to settings/system setting/apps then uninstall the maxisys app that will remove the last update.every tool is different yours may have gotten corrupted on the last update.also logging to pro.autel.com then go to software and click on your product there you will see your serial number and it should say update available, you can also do it from your tool.if none of this fixes your problem try re registering your tool,it should say product already registered and it resets your tool then try to update again error should be gone,if none of these fixes your problem contact support by phone or email they will fix it for you good luck.