firmware update 8835

 Attention before updating the firmware:
1. Before updating the firmware, please check Settings>About machine, then take some photos to record the existing firmware version.
2. Prepare a PC(not Mac) and a 4GB/8GB/16GB SD card(or USB thumb drive).
3. Please keep the engine running while updating the firmware. It may damage the unit if the radio loses power while updating firmware.  
4. You can only update the firmware from the GPS card slot or USB port, DO NOT use the SD card slot.

APP Update instructions:
Step 1. Please download the APP firmware file on your PC through this link here 
Alternative link here

(NOTE, please DO NOT unzip the file after the download).
Step 2. Format the SD card(or USB thumb drive) as fat32.
Step 3. Drag the "update.zip" file you just downloaded to the SD card(or USB thumb drive) and put it in the GPS card slot(or USB port) of the radio. It will pop up a window and ask you if you want to update the firmware after a few seconds.
Click "Wipe data and format flash!" and "Install." It will restart and update automatically. It takes several minutes to update.
Step 4. After restart, the android system firmware was updated successfully. Please check Settings>About machine, then take photos to record the existing firmware version. If it is different from the old firmware version, then it means that you have updated the firmware successfully.