Liteon 32123S@40125S to the last firmware

i have boost my liteon 32123S to 40125S with firmware XSU1
but can i flash with the last firmware for 40125S (R40ZS0P.zip) ??
when i try it ,i have an error message cant found any liteon writer 40125S

Don’t even try to update the firmware.

Read the The Big Lite-On FAQ and overclocking thread.

You will see that firmware XSU1 is the “end of the line” for your burner.

There are no firmware updates or overclocks beyond XSU1.

As is stated in the thread that is devoted to this topic, you cannot go further than the XSU1 firmware that you have, you do not have a “5” series chip, and those formwares are for “5” series only.