EN
  • Italiano
  • Deutsch
  • Polski
  • Français
Login

Flashing custom firmware (MK4/S, MK3.9/S, MK3.5/S)

Menu
Last updated 7 days ago
This article is also available in following languages: 
PLDEITFR

The Original Prusa MK4/S, MK3.9/S, and MK3.5/S are equipped with an xBuddy board

In their factory state, our printers only accept official firmware. To flash any unofficial firmware to the printer, it is necessary to break the appendix seal on the xBuddy board

Breaking the appendix seal won’t void your warranty, so you are free to flash custom firmware.
However, since there is no way for us to verify or test every single custom firmware on the internet, we disclaim liability for any kind of damage or harm a printer with a broken seal may cause (e.g. in case of a fire). 
So, please, don’t mindlessly flash suspicious files! 

Before attempting this procedure, carefully review the description and the photo below. 

To break the appendix, open the electronics box and locate a safety seal on the xBuddy board, with an exclamation mark on it. Then, take a small flathead screwdriver or very thin sharp pliers and break off the thin middle part of the seal

Once the appendix seal is broken, flashing firmware can be done following the procedure in the dedicated article on firmware updating

Was this article helpful?

Comments

Related

Still have questions?

Still have questions?

If you have a question about something that isn't covered here, check out our additional resources.
And if that doesn't do the trick, you can send an inquiry to [email protected] or through the button below.

Contact us