I am trying to upgrade my Cocoon Create 3D Printer Touch from 3.0.0 to 4.0.6.
I can flash the printer firmware with Octoprint/avrdude to any version I like - the correct version is reported in the terminal.
Unfortunately, I cannot seem to flash the LCD with the v4 firmware, no matter which version I select and which Windows method of creating the disk (either using Etcher with the unextracted img.zip or formatting the disk and manually copying the files over from the other zip).
The blue screen is displayed for a few seconds as expected, but then displays a single frame of the logo animation before swapping to the version mismatch screen. And this happens also when I am upgrading the LCD screen before the printer.
I can always successfully flash v3.* firmware, so for example I can flash version 3.0.2 to both the LCD and printer without any issues.
Does anyone have any suggestions?