Dear all,
I have owned the Ender 3 V2 for a few months now. Since the card reader stopped working, I decided to upgrade directly to the 4.2.7 board. At the same time, I installed a new print head. I converted everything carefully. When I wanted to change the firmware, I saw what is shown in the video. I have no idea what could be causing this. I hope someone can help me with this annoying problem that I have been struggling with for a few weeks. I have a new video. Please help me!!!
Kind regards and thank you for your attention, Jan