The EMMC OS image and SD card OS image for Android are both .fw file. This is different with Linux as EMMC OS image for Linux is .fw file while SD OS image for Linux is .img file.|
So after we download the Android image for Guitar, we should the IH FW Burning Tool to flash the EMMC or SD card.
If we download the EMMC Android OS image, we only need load the .fw file into buring tool, connect the guitar to the PC to enter ADFU mode, and flash it.
If we download the SD Android OS image, we also need load the .fw file into buring tool, but we should insert the SD card into Guitar first, and then onnect the guitar to the PC to enter ADFU mode, and flash it.