Help with liteon ldw811s

neewb here can anyone help i have a teac dv516e dvd and a liteon ldw 811s dvdrw the problem is with ldw 811s its supposed to write +r & -r as well as +rw & -rw only it seems to only want to write + i have tried flashing from hsok to hsop to see if this will solve the problem but comes up with unable to flash firmware contact vendor have also checked with book type and smart burn and found it only accepts +r & +rw hope this makes sense to somebody heeeeelp please:confused: :sad:

Use a .bin copy of HS0P and LtnFW to load the firmware :iagree: