WNDR4700 USB Confusion

Apparently I need to install uPD7070x-firmware-2_powerpc_464fp.ipk

Where on earth can I obtain the necessary package?

List of packages available for powerpc_464fp...

https://downloads.lede-project.org/releases/17.01.4/packages/powerpc_464fp/base/

seems driver not working even if we put the files:
'/lib/firmware/K2013080.mem'
and
'/etc/init.d/sysloadfw'
manually