@esoares Same problem here on an ender 3 v2.... 4.2.2 board as well, lcd screen is lit.... @admin, some help would be appreciated. Can we somehow confirm the bootloader is still ok ? Can you provide the bin for the bootloader, and can it be reflashed using stlink ?

Hi Michev, did you manage to fix this ? I have a similar issue....

Kind regards,

Koen.

After flashing, my LCD screen remains blank

Octoprint can no longer connect, it attempts to establish correct baudrate, eventually gives up.

I've tried

• Flashing official creality bin files via sd card (I made sure I renamed the bin file)
• Compiling latest marlin from scratch and flashing via sd card
• Reformatting sd card with different allocation sizes (32k/4k)
• Reflashing LCD screen, both with creality DWIN_SET dir and the one contained in the marlin configurations via the sd card on the back of the lcd screen.

Nothing works.

I assume therefore, the bootloader is broken. I would need to know how I can reflash the bootloader, or how for example a serial console can be attached to the board to debug the boot loading process.
I do not seem to be the only person that is having trouble with this but sofar, no-one seems to have a solution. Some help from Creality would be nice...

Kind regards,

Koen