«

»

Sep
26

How to guide : Build a buffered & none-buffered Blackcat JTAG cable

How to guide : Build a buffered & none-buffered Blackcat JTAG cable, useful for many things, this is more of a universal JTAG cable (aka Blackcat) that uses the LPT (parallel/printer port), can be used for modems, cable boxs & satellite receivers to perform repairs and other functions.

universal blackcat modem/cable/satellite jtag lpt cable

This is a simple method of making a non i.c BLACKCAT CABLE

Below is a list of the items you will need from www.maplins.co.uk
1 x JB59P [2X5 DIL IDC SOCKET]
1 x JB85G [2X5 IDC PCB HEADER]
1 x XR74R [FLAT IDC CABLE 20 WAY (SEPARATE INTO 2x 10 WAY)]
1 x YQ48C [D-SUB 25 WAY plug]
1 x JW91Y [25W D TYPE HOOD]

jtag001.jpg

Step 1: Open the DIL idc socket and slide the idc cable through and squeeze tightly to close the socket.
Take note of the way the socket is facing below.
jtag002.jpg

Step 2: At the other end of the idc cable cut the wires like in the pic below.
You will not be using 3,5,7,9 so cut and remove these wires

jtag003.jpg

Step 3: Solder wires to the rear of the 25-way plug, make sure to follow the pic below & above.
The number 1 wire should bridge 4 pins on the bottom row as in picture
jtag004.jpg

REFERENCE SCHEMATICS

UNBUFFERED JTAG

unbuff_jtag.jpg

BUFFERED JTAG

jtag_schematics.jpg

5 comments

  1. Chafik says:

    please can you tell me wich a firmwar I have to use it to DM500s

    1. DrF says:

      I recommend a factory firmware first to get the box back into a working state and then changing it to something like PLI Jade, Nabilo etc. there should be files and guides here, if not I will upload them

  2. ALED says:

    Hello all can you help me.. i need a tutorial to make blackcat cable with picture complete from the beginning how and what need to make blackat cable..until finish, This tutorial above can’t show the picture..so i not understand..please..help me.u can help me with reply my comment in the leave comment or give me email tutorial..thanks

    1. DrF says:

      Thanks for alerting me to that error its quite a old post so may have got damaged when we did a update or something. I will fix that up or find another blackcat lead/jtag help and post that up :)

  3. Tmp says:

    Hi!
    Can you re-upload the pictures?
    Thanks.

Leave a Reply

Your email address will not be published.

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>