change the clock frequency of the USB-Blaster II download cable

Hi everyone,

I wanna change the clock frequency of the USB-Blaster II download cable from 24MHz to 6MHz and I saw they said we have to use the command:

jtagconfig --setparam <cable> JtagClock <frequency>

but could someone tell me what should i do exactly?

Because when i try it in the terminal, it shows me jtagconfig --setparam 1 JtagClockThMjtagconfig: command not foundEven when i try to use that command sudo apt-get install jtagconfig

[sudo] password for jiang:

Reading package lists... Done

Building dependency tree

Reading state information... Done

E: Unable to locate package jtagconfig

Thank you in advance