Hi , Iam new d500 owner, and since i screwd the firmware , needed a serial null cable....
Not easy task for me.... it seems there are a bunch of them .
From here ...
http://www.lammertbies.nl/comm/cable/RS-232.html#null
1) Simple RS232 null modem without handshaking
2 - 3
3 - 2
5 - 5
2)RS232 null modem with loop back handshaking
2 - 3
3 - 2
5 - 5
1+4+6 - nothing
nothing - 1+4+6
7+8 - nothing
nothing - 7+8
3)RS232 null modem with partial handshaking
1 - 7+8
2 - 3
3 - 2
4 - 6
5 - 5
6 - 4
7+8 - 1
4)RS232 null modem with full handshaking
2 - 3
3 - 2
4 - 6
5 - 5
6 - 4
7 - 8
8 - 7
From Doom9 , and also a kid in this forum who tested it.
http://www.doom9.org/index.html?/DigiTV/dbox-howto.htm
5)Normal Null cable for D7000
2 - 3
3 - 2
4 - 6
5 - 5
6 - 4
7 - 8
8 - 7
6)The one i Bought from the stores, as null modem serial cable, (almost like 5)
1 - 4+6
2 - 3
3 - 2
4+6 - 1
5 - 5
7 - 8
8 - 7
7)The one i Found in my Home ( no idea what it is), and seems to work !!!
1 - 1
2 - 5+9
3 - 4
4 - 3
5+9 - 2
7 - 8
8 - 7
Now the story sort...
-Used flash wizard pro 5.0 on my D500 to update for -Gemini_200_DM500- image, all looked ok in the procedure, but my D500 starts with a black screen and do nothing....
-Used the Null cable i Bought (6) with dreamup , but no connection (nothing at all)
-Made number (5) null cable from scrach, also number (1), still nothing.
-Then i thought it was all dead, so used no (7) and it seems OK !!!!
(I didnd flash with it yet, because is totaly different , and the only one that has no 5-5 pin, and also other changes)
I ll just go to work now, and when i come buck, i will be really sleepy, but i have to test the dawmn thing....
Please tell me, should i Do the flash with that cable?
Should i try gemini ? or the original first? what version ?
Anything else i should be carefull of ?
THANKS a lot, and sorry for my english.