https://github.com/TwoTreesArt/SapphirePro
Unlike mass-produced printers (e.g., Elegoo or Anycubic), Two Trees printers often ship with generic, unfinished firmware. Users typically seek a new firmware link for one of three reasons: two trees sapphire pro firmware link
If you've added an automatic bed leveling sensor, firmware updates are necessary to configure the -offset and probe settings. https://github
The stock firmware provides the original manufacturer settings, touchscreen UI config files, and default motor directions. Elegoo or Anycubic)
Many users prefer community-developed Marlin builds for better control over features like flow rate and manual leveling.