Two Trees Sapphire Pro Firmware Upd ((install)) -

Compensate for warped beds without extra hardware.

This usually means the firmware filename was incorrect or the assets folders were missing. Ensure the .bin file renamed itself to .cur on the SD card (this confirms a successful flash).

Ensure your extruder is pushing the exact amount of filament requested. two trees sapphire pro firmware upd

Better utilization of the MKS Robin Nano’s TMC2208/2225 drivers.

The MKS Robin Nano is picky. Use a low-capacity card and ensure it is formatted correctly to FAT32. If you'd like to dive deeper into the setup: Compensate for warped beds without extra hardware

Re-level your bed completely, as the new firmware may have different home positions. Troubleshooting Common Issues

Robin_nano35.bin (The filename must be exactly what the board expects). Ensure your extruder is pushing the exact amount

If your X or Y axes are inverted, you can usually flip them in the mks_config.txt file without re-compiling the entire firmware.