Well, the kernel-cssu-flasher is not pulled as a dependency One should have known to fetch it manually after the upgrade to get a working kernel... Bad packaging? @Mohammed Muir: You might try to flash the kernel of the firmware image to get back to maemo with stock kernel and try install kernel-cssu-flasher
. . . ke-recv (>= 3.19-15.2), kernel-cssu-flasher ( = 1:2.6.28-10cssu2 ), libclutter-0.8-0 (>= 0.8.2-0maemo67+0m5-thumb1), . . .