Dear User, To provide a faster diagnostic speed and better service, Autel has optimized the MaxiSys Series software. This optimization will erase ALL existing diagnostic software. Please download and install ALL you desired diagnostic software before your update subscription period expired. Optimization procedure: Step 1: Check the active software period of the device and make sure the update will be finished at the best time. Step 2: Update the operating system and the device will reboot automatically after update is finished. Step 3: After reboot, tap Update application and select the desired diagnostic software to update. Suggested download schedule for better download experience: North America: Oct.8–Oct.15; Europe: Oct.15 –Oct. 22; Other Areas: Oct. 22 –Oct. 30 The optimization pack is still available for users whose update subscription period ends between October 8 and October 31, 2015. If you have any questions, please contact your local distributor or call us at: North America: 1-855-AUTEL-US (288-3587) Europe: +49-162-1300334 China Headquarters: +86-755-2267 2493