Firmware for Liteon 401S to 411S

I’ve read in several places that the firmware on the Liteon 401S can be upgraded to 411S. This allows the DVD Writer which normally only accepts +R and burns at 4X disks to accept -R’ disks and burn at 8X

Has anyone done this update?
does it work?
where can i get the info on how to do it?

Thanx

the 411s can’t do 8x unless the hacked roms do it .

I have a 411s that i bought it doesn’t do 8x hehe

the 811s/851s does 8x