Two Trees Sapphire Pro Firmware Upd Portable -

With the printer turned off , insert the microSD card into the slot on the front or side of the machine.

| Symptom | Likely cause | Solution | |---------|--------------|----------| | Screen stays blue >2 min | Wrong .bin name or wrong board target | Rename file correctly; recompile for your MCU | | Printer beeps repeatedly | SD card not FAT32 | Reformat, use 8GB card if possible | | Old version still shown | Bootloader skipped update | Clear SD card, keep only one .bin file, retry | | Touch screen icons missing | LCD firmware mismatch | Flash DWIN LCD firmware separately | two trees sapphire pro firmware upd