Formatting the SD Card
Step 1: Turn the printer OFF.
Step 2: Remove the micro-SD card from the printer and insert it into your computer.
Step 3: Download the formatting software, then format the micro-SD card. Tutorial here:
Updating the Firmware
Step 4: Download the firmware that matches your device, then unzip the file.
Step 5: Write the IMG file into the micro-SD card.
Step 6: Insert the micro-SD card back into the printer.
Step 7: Turn the 3D printer ON.
1. If the SD card isn't working properly, please use a 16G or 32G class10 micro-SD card.