dir-300-b1 | \
dir-600-b1 | \
dir-600-b2 | \
+ esr-9753 | \
fonera20n | \
hw550-3g | \
mofi3500-3gn | \
omni-emb | \
rt-g32-b1 | \
rt-n15 | \
+ w502u |\
v22rw-2x2 | \
+ wli-tx4-ag300n | \
whr-g300n)
[ "$magic" != "2705" ] && {
echo "Invalid image type."