This is from the NEC thread, but the Liteon usage is the same:
1/ Download the firmware you want to modify.
2/ Start MCSE.
3/ Load the firmware .exe or .bin file.
4/ To increase the write speed, double click the media code you want to change and select the write strategy you want to use instead. This is a bit of trial and error. Check the Changing NEC DVDÂ±R write strategies (results thread) to see if your modification has been tried before.
6/ Save the firmware.
7/ Start the modified flasher or flash the .bin file.
And as already said, the latest Liteon drives use a checksum which MCSE currently does not recalculate, so I assume burning will fail with patched firmwares.