Steps to upgrade iGS618:
1) Power off the device, connect the device to a computer.
2) Short press left button,the device will be recognized as a new disk.
3) Enter the webpage to download the firmware file.http://global.igpsport.com/home/download
4) Unzip the file, and put the .rsc file into the root disk directly as below:
5) Then the device will start upgrading automatically
(do not disconnect with the computer until the upgrading finished);
6) Check the firmware version, navigating Setting>About.