I'm a super noob. I'm using a terminal so it has the # before each. I wouldn't put adb in would I.
I'm following this
su
mount -o remount,rw -t yaffs2 /dev/block/mtdblock5 /system
cat /sdcard/flash_image > /system/bin/flash_image
chmod 755 /system/bin/flash_image
mount -o remount,ro -t yaffs2...