This is a bug fix release recommended to all Prusa MINI owners.
Summary
- Random BSOD fixed
Random BSOD fixed
Some users have reported an issue with a random blue screen of death (BSOD), causing the printer to halt. The problem was with synchronization of the inter-task messages from a message queue, which were occasionally incorrectly processed. Most of the reported BSODs occurred in the webServerTask responsible for running the web user interface. However, it was later found out it wasn't the fault of the webServerTask itself, the same error could have happened with other services as well, even regardless of the printer being connected to the Ethernet (LAN network).
There are several firmware versions, which can be possibly affected (4.0.5, 4.1.0 and 4.2.0) and it is recommended to update them to this latest release 4.2.1.
Side-note: The developers started to work on it as soon as this BSOD issue was reported. However, finding and reproducing this error was very complicated and took almost an entire week as most of the company's printers were unaffected even after several days of non-stop printing.