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Thread: Usb serial cable and no null modem solution

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    Default Usb serial cable and no null modem solution

    Hi all

    Short tutorial for those who have purchased a usb to serial cable and found that it isn't working with porter software. You will need a null modem cable too or you could follow this tutorial and make your own in a few minutes.

    Things you'll need:

    Soldering iron
    Solder
    Solder Flux
    Wire strands, anywhere from 2-10cm in length (3 pieces)

    1. What you will be doing is soldering to the male adapter on your set-top-box (miraclebox or any other receiver with a db9 connector) and to the male adapter on the serial cable, db9 to db9. If you look at those male adapters they will be numbered where the pins are. You will solder a strand of wire from pin 5 to pin 5. Next you will solder a wire from pin 3 to pin

    2. Next wire will be pin 2 to pin 3. If you search db9 to db9 pinout it'll give you a diagram of where the different cables on a null modem cable to. You want to solder ground to ground on both male heads. Then you want to solder rxd to txd and 3rd cable will be txd to rxd. All done, plug the usb end into your computer open porter and flash away.

    Good luck and if you have any questions feel free to ask!
    Cheers
    Last edited by Jullez101; 24-11-13 at 01:15 AM.

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    Junior Member ferni's Avatar
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    Default

    Or you can just do what I did and just get a spare serial cable and 3 paper clips


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    Exclamation USB to Null Modem Cable ????

    Quote Originally Posted by Jullez101 View Post
    Hi all

    Short tutorial for those who have purchased a usb to serial cable and found that it isn't working with porter software. You will need a null modem cable too or you could follow this tutorial and make your own in a few minutes.

    Things you'll need:

    Soldering iron
    Solder
    Solder Flux
    Wire strands, anywhere from 2-10cm in length (3 pieces)

    1. What you will be doing is soldering to the male adapter on your set-top-box (miraclebox or any other receiver with a db9 connector) and to the male adapter on the serial cable, db9 to db9. If you look at those male adapters they will be numbered where the pins are. You will solder a strand of wire from pin 5 to pin 5. Next you will solder a wire from pin 3 to pin

    2. Next wire will be pin 2 to pin 3. If you search db9 to db9 pinout it'll give you a diagram of where the different cables on a null modem cable to. You want to solder ground to ground on both male heads. Then you want to solder rxd to txd and 3rd cable will be txd to rxd. All done, plug the usb end into your computer open porter and flash away.

    Good luck and if you have any questions feel free to ask!
    Cheers
    That has got to be the most convoluted remedy that I've ever seen.

    Pray tell, what do you do if you need a serial output later ????

    Clarify whether it's USB or DB9 connector ???



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