script does this...mount -o remount,rw /dev/block/mmcblk0p25 /system
cp /sdcard/curcial-oj.kl /system/usr/keylayout/curcial-oj.kl
chmod 04775 /system/usr/keylayout/curcial-oj.kl
mount -o remount,ro /dev/block/mmcblk0p25 /system
mount -o remount,rw /dev/block/mmcblk0p25 /system
rm /system/usr/keylayout/curcial-oj.kl
mount -o remount,ro /dev/block/mmcblk0p25 /system