Ahoy there!
Try this updated installer for Bookworm: https://github.com/pimoroni/inky/pull/182
(It's still a WIP so our software team would love to know how you get on).
“Very good, once you work out some of the quirks involved :) The biggest tip I can offer is that the "AUTO" type detect didn't work at all, and I had to use "--type ssd1608" to make it do anything at all. Documentation could be improved, hence 4*, but the actual display is excellent. The BLACK display updates in about 2 seconds, but the other coloured ones apparently take ~15 seconds, even if you're only using the black ink. Order accordingly!”