Firmware Guide

How to Flash Firmware on the Sapphire Plus

  1. Turn off the printer
  2. Load our firmware robin_nano35.bin (has to be this exact name, but case-insensitive) onto your SD card root directory
  3. Insert the SD card into the printer
  4. Turn on the printer
  5. Wait for the loading to reach 50% or 100%
  6. If progress bar stops moving for 10 seconds, then turn off the printer
  7. Take out the SD card
  8. On the SD card, the firmware has been renamed to a .CUR extension
  9. Delete this .CUR extension, and load the original .bin onto the SD card again
  10. Repeat steps 3-9 until you are greeted with the Marlin interface (it could take a few cycles)
  11. You are done! Just delete the .CUR extension one last time
  • For future Marlin-based updates, this cycle should only need to be done once.