very thanks for help misiak
yes i know how to flash the kernel and when this broken , flash the old one
the custom kernel suport openmode ( that can chroot and run nitdroid ) and have some vpn moudel ( pptp or l2tp = slhc.ko ppp_generic.ko ppp_async.ko sha1_generic.ko ppp_mppe.ko )
and some module and perfomance you now important for later
i now this difficult and lose your time , i trying to learn comile the kernel and custom it
here is forum of nitdroid about kernel N9 http://forum.nitdroid.com/index.php?topic=90.0