Need help for 3520A firmware

vbimport

#1

Hi,

I would like change the speed of my DVD-R media. But when I change with AXE Hexeditor and save the BIN file, NECwinflash wan’t flash my 3520 for a checksum error. But NECDUMP can read the BIN file and detect the speed.

How I can repair the checksum? :confused:

Or someone can change for me the speed?

I want this:

[VDSPMSAB 01 ] -> 4x
[VDSPMSAB 02 ] -> 4x
[VDSPMSAB 03 ] -> 4x
[VDSPMSAB 04 ] -> 4x
[VDSPMSAB 05 ] -> 4x

to

[VDSPMSAB 01 ] -> 2x 4x 6x 8x 13x 16x
[VDSPMSAB 02 ] -> 2x 4x 6x 8x 13x 16x
[VDSPMSAB 03 ] -> 2x 4x 6x 8x 13x 16x
[VDSPMSAB 04 ] -> 2x 4x 6x 8x 13x 16x
[VDSPMSAB 05 ] -> 2x 4x 6x 8x 13x 16x

Thanks in advance. :iagree:


#2

You need a routine or tool to recalculate the checksum.
Hex editors is not considered a safe way to modify firmware.