• Faster and more responsive communication with Prusa Connect

This is the alpha release for the upcoming firmware 6.2.6 for the Original Prusa MK4, MK4S, MK3.9, MK3.9S, MK3.5, MK3.5S, MINI & XL, introducing a major backend upgrade for printers connected to Prusa Connect. While marked as an alpha, this release maintains the stability and security of existing features of the printer.

Note: The MINI firmware build with Japanese language support is not included in this alpha release.

Faster and more responsive Prusa Connect experience

Communication between the printer and Prusa Connect is now handled using WebSockets, replacing the previous polling-based method.
While this change does not affect raw data transfer speed, it significantly improves overall responsiveness and interaction with the cloud service. Users can expect (via Prusa Connect):

• Lower latency when starting prints
• Faster execution of remote commands
• Smoother and more fluid control during cloud-based workflows

This update also lays the groundwork for future enhancements to remote monitoring and control by the user, allowing for continued improvements to the connected experience in future releases.

Release notes

https://github.com/prusa3d/Prusa-Firmware-Buddy/releases/tag/v6.2.6-alpha