Is installing/uninstalling wlan firmware as simple as using opkg in luci, or is there more to it?

I'm running an Archer c7 v2 and having issues with my 5Ghz radio on

I've seen that people recommend uninstalling the ct version of the radio firmware, and installing the classic.

It seems as though no matter what I do, if I uninstall the ct firmware, and then install the classic (kmods as well obviously) through the package manager, I end up with a dead 5Ghz radio.

My method is:

  • Uninstall ath10k-firmware-qca988x-ct
  • Uninstall kmod-ath10k-ct
  • Install ath10k-firmware-qca988x
  • Install kmod-ath10k
  • reboot

Should I be doing something different?
Should I overwrite packages when that option comes up?

I believe I have tried rebooting between install and uninstall, but am trying that again now anyway.

Thanks for your help. Sorry in advance if this is silly.

The firmware packages only provide two single files for /lib/firmware/, in your case:

# opkg files ath10k-firmware-qca988x-ct
Package ath10k-firmware-qca988x-ct (2019-10-03-d622d160-1) is installed on root and has the following files:

/lib/firmware/ath10k/pre-cal-pci-*.bin is extracted from ART during firstboot and shouldn't (need to) be touched afterwards.

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