Coolpi supports UMS to update emmc firmware, as follows:
- Update the latest versions of loader and uboot images. You can also synchronize uboot code and compile it yourself.
git clone https://github.com/yanyitech/coolpi-loader
cd coolpi-loader
./build-uboot.sh cp4b
- Connect a dual A port USB cable to the computer and the upper USB 3.0 interface. Plug in the power and press the power button three times, and the machine will enter UMS mode.
- Use Etcher software to update the software.