Getting Paperlike 253 Color working with a s905x

Hardware
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1

I’m trying to get a color e-ink screen working with the le potato: DASUNG 25.3" E-ink Monitor: Paperlike 253

There has been success with the rpi-4 and the black and white version: GitHub - tommythorn/Paperlike-Raspberry-Pi-4: How to use a Dasung Paperlike HD-F, HD-FT, and Paperlike 253 with Raspberry Pi 4 [and other hosts?]

Tried following the advice there but no luck on the color version. Not sure where to really start.

The edid.dat extracted from the monitor seems a bit odd:

Checksum Correct
Section "Monitor"
       Identifier "Paperlike253C�"
       ModelName "Paperlike253C�"
       VendorName "DSC"
       # Monitor Manufactured week 50 of 2022
       # EDID version 1.3
       # Digital Display
       DisplaySize 560 320
       Gamma 2.20
       Option "DPMS" "true"
       Horizsync 25-120
       VertRefresh 29-62
       # Maximum pixel clock is 300MHz
       #Extension block found. Parsing...
extb[4]: 0x23 (0x20)
Hmm, you have data blocks, but not video ones... weird
Something strange happened.
2

We don’t have a sample of these to test against. Maybe e-mail the manufacturer to reach out and provide a sample for testing. Does the monitor work with standard desktops? What color format is being sent over HDMI?