Ian: Experience with LiteOn Help is that the 'help' isn't worth the bother.
ie, Not much help.
Personal opinion is to replace the drive with an alternate DVD burner.
I replaced my 5005A drive ( DDW 813S 01C original drive ) with a LiteOn LH-18A1P drive. ( approx $32 US )
First, downloaded LtnRPC onto my PC and installed it. Then installed the LH-18 on the PC temporarily and ran the LtnRPC in order to change the Region Code to "None".
LtnRPC Reference page: http://dhc014.rpc1.com/LtnRPC/index.htm
Zip File location: http://dhc014.rpc1.com/LtnRPC/LtnRPC.zip
Then, modified the external casing of the LH-18 using a handheld nibbling tool to trim back about 6 mm on the leading edge of the upper casing half to ensure that it fit well into the 5005 case without interference.
In general, followed the procedures outlined by Kevin Dowd in his step-by-step replacement procedure, a most helpful tutorial for a first try:
Then Downloaded LNFA 1098.ES3 (hacked) and created Data Disk using Nero.
See Pumapeople site http://www.pumapeople.com/liteon/ general files
Specific file for 5005 system firmware, hacked, version 1098
( US / Canada file. Other files ( UK ) available at the pumapeople site and maybe other locations, as well )
Download, unzip, burn CD, then follow firmware upgrade sequence of : power Off/On, open door, insert data CD, follow instructions to upgrade as seen on monitor/tv screen. Wait for upgrade to finish. Power off/on to reboot.
Results for me: It's Alive...MV disabled, FF / RW is now functional. Reads commercial DVDs with or without MV.Identifies and prepares DVD +R ( Fuji 16x media ) and +RW (Memorex )media. Other media recognition is unknown as I had no other media to try out. Records and finalizes onto +R and +RW media. Records region free, MV free.
I'm a 'newbie' but this did, in fact, work for me. Hope this synopsis is helpful to you.
Regards and best of luck.