have you tried forcing the firmware? download the 110D firmware that is mentioned in this forum somewhere... i have the 110D and i used the maxrip 8.37 firmware which enables dvd-ram writing and does the riplock etc i find it hell of alot better than the firmware from the pioneer site which is the normal 1.39 or so.
if your going to use the maxrip 8.37 or the latest 8.39 (i`ve stuck with the 8.37 because i have had no problems with it) . download the zip file and create a folder on C: drive and name it 110 then extract the contents of the mazrip zip into that folder, so now you should have a folder named 110 on c-drive wich contains 4 files
now go to start menu then click on RUN , and type or copy and paste this next command line into
c:\110\DVRFlash -vff D: RA154010.837 RA154110.837
the C:\110 <<<< is the directory containing the files and the D: is what Drive my writer was on , so you might have to change the Pioneers drive letter according to what yours is
click OK it now will open the command window asking you to agree to the terms . type in Y then press Enter, it will now prompt you again, type Y again and again press Enter. it will now countdown from 30 seconds telling you to hold your breath lol, once finished and all is good the command window will Auto Close, so dont be clicking anything, you might have to reboot and you now should have the maxrip firmware.
you should be able to force any firmware you like, its upto you if you go ahead with it