This is what the README says (translated by Google from Japanese into English) :
< Software introduction > The DVM-RDM16FB (pioneer make DVR-109 drive) we offer the program software which updates the firmware to the Ver.8.40. By this program, like below improvement of efficiency is measured. When updating inconvenience in regard to use and, the firmware, in order to avoid trouble, please read the explanation below well execute this program.
< Modification past record >
Contents of update to of firmware version 8.40
8.17 -> 8.40
* DVD-R DL (2 layer) correspondence
(6x writing: The Mitsubishi chemical make DVD-R DL 4x media)
* this ファ - with the ムウェア ディスクアットワンス system (the system which cannot be appended) we correspond to only entry. Multiple session system and LayerJump Recording system (postscript possible system) we do not correspond to entry.
* Corresponding software
* SONIC RecordNow
* SONIC MycDvd (first third of April of 2005 correspondence schedule. It is necessary to download the update module of the software from the sight of the SONIC corporation.)
* DVD-R/RW light/write quality improvement
* DVD+R/RW light/write quality improvement
8.05 -> 8.17
* DVD-R16 time fast corresponding new disk support (16x writing: Mitsubishi chemical make media / the Hitachi マクセル make media)
* DVD+R16 time stenography record corresponding new disk support (16x writing: Mitsubishi chemical make media / the Hitachi マクセル make media improvement of)
* DVD-R/RW light/write quality improvement * DVD+R/RW light/write quality improvement
* CD-R/RW light/write quality < Note > DVM-RDM16FB exclusive use (the ATAPI built-in model) it is the program software which is updated. As for update of the firmware, please go on customer himself responsibility. The failure of firmware update with cause compensatory correspondence solved concerning the request for repair, it does.
* When it updates in firmware version 8.40, it becomes not be able to modify in version of the time before. < Procedure of update > It downloaded, the DVMRDM16fB_FW840.exe has become the self-extracting file. Double please click the idea contest of the DVMRDM16fB_FW840.exe. The folder which recorded the file which shows update program and operating procedure [ the DVMRDM16FB_FW ] is developed. The folder which is developed [ double please click [ the idea contest of the DVMRDM16fB_update.html ] in the DVMRDM16FB_FW ] ]. Following to the update procedure which is stated, please be sure to do update on the Windows.
I think maybe they have added the DVD-R 6x support ???