from what i know the kernel always starts by loading 2.0.1888, it than patches with the rest of updates that are on the nand.
is it possible to remove 2.0.2255 and keep the remaining patches ??
just curious becous wiki tells:
Kernel 2.0.2255.0 has a blocklist for certain .xex files
so the kiosk disk is blocked.
or do all kernels include the blocklist ? otherwise it would be possible if we could remove 2.0.2255 and we would have an exploitable kernel installed to run a patched king kong demo from the kiosk disk on a console without dvd-key.
maby a long shot but if you never try, you will never know.