To format your SD card, plug your Fly6 to your computer via the provided USB cable.
Once recognised, proceed with the steps mentioned in the video below.
NOTE: If it is not recognised, please use the SD card adapter that came with Fly6 and plug it into your computer.
After formatting, simply re-insert the SD card into your device and turn it on. The device will automatically re-install the system files and you will be good to go.
Note: Make sure that you select the "FAT32" for the file formatting you Fly6.