Ok maybe I'm missing something but I have been searching this thread for like hours. I am using terminal emulator. This is exactly what I put in and what I get.
# mount -o remount,rw -t yaffs2 /dev/block/mtdblock4 /system
Usage: mount [-r] [-w] [-o options] [-t type] device directory
# dd if=/sdcard/bootanimation.zip of=/system/media/bootanimation.zip
/system/media/bootamination.zip: cannot open for write: Read-only file system
Ok so what do I need to do here???