Stack Exchange network consists of 178 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
3D Printing Stack Exchange is a question and answer site for 3D printing enthusiasts. It only takes a minute to sign up.
Q&A for work
Connect and share knowledge within a single location that is structured and easy to search.
Upgrading motherboard to v4.2.7 How do I reset the firmware after making wrong mods?
You could download the firmware version directly from the vendor and choose the one that is supposed to be on the board when it was shipped to you.
Put the bin file on the SD card from your laptop/computer and reinsert the SD card in the printer and start the printer.
Required, but never shown