md5sum -c md5sum
adb push recovery-RA-pecan-2.2.1-GNM-drap.img /sdcard/
adb push flash_image /sdcard/
adb shell
$ su
# mount -o remount,rw -t yaffs2 /dev/block/mtdblock1 /system
# cat /sdcard/flash_image > /system/bin/flash_image
# chmod 755 /system/bin/flash_image
# sync
adb shell
$ su
# flash_image recovery /sdcard/recovery-RA-pecan-2.2.1-GNM-drap.img
# sync
# reboot recovery