^ its pretty simple. the same way as you flashed the zimage (kernel) flash the rootfs.bin using the command to flash only the kernel from this file. this step removes the open mode.

secondly if you're using alpha #2, nitdroid is installed in /home/nitdroid. delete the nitdroid folder and you're done.

if you want to get rid of sillyboot too, just flash rootfs.bin with a command to flash only the boot file. it will remove the dual-booting option.


the above is my method. pls feel free to correct me...