https://amazonfiles.s3.amazonaws.com/MDO713upgradesoftware.exe
And the steps of updating are as following: 1. decompress the file, copy the file into SD card. 2. shut down the machine, insert the SD card into the GPS card slot, turn on the machine. 3. the unit go into the 3rd picture from 2nd picture automatically. 4. after the 3rd step, the unit go into correcting interface. 6. after the fifth picture, the unit will go into the black screen with bleeps, you just need to wait. 7. then the unit go into the interface, it will update automatically. 9. you can see "Mission Accomplished! please pull out of the card!", then take out the SD card, the unit will turn on automatically.