Firmware request for HL-DT-ST DVD-RW GRA-4082N

patricec · **Joined:** Sat Dec 11, 2010 6:00 am **Posts:** 4

Greetings,

I have a Philips Freevent X56 (really a Twinhead H12Y) fitted with HL-DT-ST DVD-RW GRA-4082N.
I haven't been able to find a RPC-1 patch on this site or elsewhere.

DiscInfo gives:
DISCINFO VERSION : 1.6.1.6
VENDOR : HL-DT-ST
MODEL : DVD-RW GRA-4082N
REVISION : HB01
VENDOR SPECIFIC :
LOADING MECHANISM : Tray
SERIAL NUMBER : K0868B80538
NUMBER VOL. LEVELS : 256
BUFFER SIZE : 2048KB
INTERFACE : ATAPI
RPC2 SCHEME : YES
STATUS : Set
USER CHANGES : 4
VENDOR CHANGES : 4
CURRENT REGION : 2
ANALOG AUDIO PLAY : YES
COMPOSITE OUTPUT : NO
DIGITAL PORT-PORT1 : NO
DIGITAL PORT-PORT2 : NO
READ UPC CODE : YES
MULTISESSION READ : YES
MODE 2 FORM 1 : YES
MODE 2 FORM 2 : YES
READ ISRC CODE : YES
READ BAD CODE : NO
BUFFER UNDER-RUN : YES
MT. RAINIER : NO
CAN READ CDR : YES
CAN READ CDRW : YES
CAN READ CDRM2 : YES
CAN WRITE CDR : YES
CAN WRITE CDRW : YES
CAN TEST WRITE : YES
CAN READ DVD-ROM : YES
CAN READ DVD-R : YES
CAN READ DVD-RW : YES
CAN READ DVD-RAM : NO
CAN READ DVD+R : YES
CAN READ DVD+RW : YES
CAN WRITE DVD-R : YES
CAN WRITE DVD-RW : YES
CAN WRITE DVD-RAM : NO
CAN WRITE DVD+R : YES
CAN WRITE DVD+RW : YES
MAX CDR READ SPEED : 24
MAX CDR WRITE SPEED: 24

I was able to dump the main and core firmware using "flasher.exe" but lacking the ability/knowledge to create a patch.
I can forward the firmware dump if required.

Regards,

chef · **Posted:** Sat Dec 11, 2010 3:38 pm

You may have seen this list: http://tdb.rpc1.org/#GSA4082N
Sadly, TDB stopped patching firmwares a while ago...

patricec · **Joined:** Sat Dec 11, 2010 6:00 am **Posts:** 4

@ [_chef_]

I have seen a number of references to GSA-4082N but it isn't of much help as I do not know the difference (if any) with my GRA-4082N.

chef · **Posted:** Sun Dec 12, 2010 7:32 pm

GRA means OEM firmware with some features disabled.

Sadly there seems to be no possibility to patch your HB01.....

devilsclaw · **Joined:** Sat Jan 12, 2002 6:08 am **Posts:** 331

It looks like you should be able to dump the firmware will my tool.
viewtopic.php?f=2&t=46137

if you can please provide the dumps of the main and core.

then we might be able to help you get a patched firmware or another one that will work with it.

patricec · **Joined:** Sat Dec 11, 2010 6:00 am **Posts:** 4

@ devilsclaw

I had already dumped the files using your tool.
As requested, Core firmware and Main firmware in attachment.

I must say I am curious to know how you can reverse-engineer those binary files.
What comes to mind is that you somehow convert the binary to assembler, then figure out the location of the "zone" information, then change it to 0 and finally calculate the new checksum.
How far off am I?

Puma · **Posted:** Mon Dec 13, 2010 2:12 am

patricec wrote:

@ devilsclaw

I had already dumped the files using your tool.
As requested, Core firmware and Main firmware in attachment.

I must say I am curious to know how you can reverse-engineer those binary files.
What comes to mind is that you somehow convert the binary to assembler, then figure out the location of the "zone" information, then change it to 0 and finally calculate the new checksum.
How far off am I?

you can patch the main firmware with MCSE. you will get RPC2 Autoreset.

patricec · **Joined:** Sat Dec 11, 2010 6:00 am **Posts:** 4

I have to go away for a couple of weeks but will come back around New Year day to report on how things went.

Thanks for the help/info provided so far.

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Firmware request for HL-DT-ST DVD-RW GRA-4082N

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