@Estel
i found it myself too chattering too, so while noticed i wrote the actual problem in caps. I would facepalm about people quoting the text with sentence with caps, and don't find it most important if only I don't make bigger mistakes sometimes.

so to the problem: i have both KP48 and KP49 installed, where KP49 is both bootimg and flasher (i believe the flasher make it able to multiboot from partitions not supported by stock kernel, but the real reason is i had KP before I had multiboot). I want to uninstall the KP48 as i have KP49 one (so the KP48 i found myself not needed) to free rootfs space a bit. I don't know how to do this in a way that leave the KP49 intact without need to reinstall it. I believe that i have all binaries from KP48 left, not only the multiboot entry, so i ask for help.