firmware for _NEC DV-5800A

hi guys,,i have this dvdrom reader ..and i'm looking for actual firmware... actually i have 1.0A firmware.
i was trying to find all around about an update even in nec page but ...
thanks in advance
Drive                      : _NEC     DV-5800A
Type                       : DVD-ROM Drive
Firmware Version           : 1.0A
Buffer Size                : 512 KB
Date                       : ?
Serial Number
Vendor Specific            : 01080200
Drive Letter               : D:\
Location                   : 1:0
Mechanism                  : Tray
Read Speed                 : 48 X
Write Speed                : n/a
Read CD Text               : Yes
Return C2 Pointers         : Yes
Read CD-R                  : Yes
Read CD-RW                 : Yes
Read DVD-ROM               : Yes
Read DVD-RAM               : No
Read DVD-R                 : Yes
Read DVD-RW                : Yes
Read DVD+R                 : No
Read DVD+RW                : No
Read DVD+R DL              : No
Read Digital Audio         : Yes
Read CD+G                  : Yes
Read VideoCD               : Yes
Write CD-R                 : No
Write CD-RW                : No
Write DVD-R                : No
Write DVD-RW               : No
Write DVD+R                : No
Write DVD+RW               : No
Write DVD+R DL             : No
Write DVD-RAM              : No
Buffer Underrun Protection                                                                                                                                                                                                                                                                : No
Mount Rainier              : No
Modes                      : n/a
Region Protection Control : RPC II
Region                     : 1
Changes User               : 4
Changes Vendor             : 4
Disc Information (D:\)
-------------------
Type                   : - no disc inserted -

Drive Information
------------------
Drive                      : Memorex DVD16+/-DL4RWnD2
Type                       : DVD±R/RW DL Recorder
Firmware Version           : 1.A1
Buffer Size                : 2 MB
Date                       : ?
Serial Number              : 51J5270S111
Vendor Specific            : 04122400
Drive Letter               : E:\
Location                   : 1:1
Mechanism                  : Tray
Read Speed                 : 48 , 40 , 32 , 24 , 20 , 16 , 10 , 8 , 4 X
Write Speed                : 48 , 40 , 32 , 24 , 16 , 8 X
Read CD Text               : Yes
Return C2 Pointers         : Yes
Read CD-R                  : Yes
Read CD-RW                 : Yes
Read DVD-ROM               : Yes
Read DVD-RAM               : No
Read DVD-R                 : Yes
Read DVD-RW                : Yes
Read DVD+R                 : Yes
Read DVD+RW                : Yes
Read DVD+R DL              : Yes
Read Digital Audio         : Yes
Read CD+G                  : Yes
Read VideoCD               : Yes