OK, now it is very clear. The willi6868's response to my posting will help and perhaps a search of the forum to see what issues folk have with k-p. But any problems are not easily resolvable, that much is clear. Funny thing is device behaviour can vary. Before my last reflash with k-p, CSSU-Testing my n900 would not reboot on demand. Now with k-p, CSSU-Thumb it does.