I am an experienced 3D Printer user who has been using your service for a couple years now. I cleared the dust off my Ender 3 V2 printer and updated the firmware, expecting it to work flawlessly as usual.
The firmware I used is the Ender3 V2 4.2.7mainboard with BLTouch. (Ender3-v2-v427-BLTouch-20230719.bin)
I updated my x, y and z offsets and attempted to load filament. As soon as I pressed the button, I get an error stating the “hotend or bed temperature is too low.” It absolutely would not let me do anything beyond tinkering with the settings. I even tried lowering the minimal temp to zero (0), and that did nothing. I did several power resets and it did the same thing every time. The Alarm beep is loud and annoying, btw… I tried manually setting the temperatures. The bed would accept a temp and responded. The hotend itself gave that same crazy error every time, with some mintemp error.
Frustrated, I downloaded the Marlin version of the firmware and although the menu is a bit different, it's working flawlessly. All offsets are installed and it is now printing a test. In my opinion, the firmware should work with minimal adjustments, setting offsets, etc. The default temps should be good enough for basic tests, such as printing a test cube in the center of the print bed. In the past, I'd update this firmware, make the offset adjustments and then print something a few moments later. Whatever this PRO stuff is, it renders my printer unusable.