extract the zip and copy syntouchpad to root of internal storage

adb shell

Once shell is connected type
su

Remount system rw
mount -o rw,remount /system

Rename the previous version
mv /system/bin/syntouchpad /system/bin/syntouchpad.bak

copy syntouchpad from internal storage
cp -R /sdcard/syntouchpad /system/bin/syntouchpad

Give the binary appropriate permissions
chmod 0755 /system/bin/syntouchpad

Wipe previous syntouchpad configuration
rm -rf /data/system/syntouchpad

reboot the device