su is only needed if you have a "$" in the command line. typing su should yield "#". if you have "#" then you do not need to type su.
if everything matches up with what is shown then your bootloader should have changed from unlocked back to locked.
well it's not matching up... i either get the no such file message or if I type cat then press enter then type the commands i get that triple output look but the # only appears once before I type cat. here is an exact copy and paste of what my prompt looks like with what I tried:
C:\Users\Jacob (last name)\Desktop\andriod>adb shell
# cat
cat
/sdcard/flash_image > /data/flash_image
/sdcard/flash_image > /data/flash_image
/sdcard/flash_image > /data/flash_image
chmod 755 /data/flash_image
chmod 755 /data/flash_image
chmod 755 /data/flash_image
/data/flash_image misc /sdcard/mtd-eng.img
/data/flash_image misc /sdcard/mtd-eng.img
/data/flash_image misc /sdcard/mtd-eng.img
/data/local/tacoroot.sh --undo
/data/local/tacoroot.sh --undo
/data/local/tacoroot.sh --undo
but the way the instructions say look like this:
C:\Users\Jacob (last name)\Desktop\andriod>adb shell
#cat /sdcard/flash_image > /data/flash_image
/sdcard/flash_image: no such file or directory
should I reset the phone to factory settings?