I got the following error message when I try to install firmware-misc-nonfree_20190114-2_all.deb from the upstream debian repository.
...
Get:1 http://deb.debian.org/debian buster/non-free arm64 firmware-misc-nonfree all 20190114-2 [3,338 kB]
Fetched 3,338 kB in 1s (4,022 kB/s)
Selecting previously unselected package firmware-misc-nonfree.
(Reading database ... 77206 files and directories currently installed.)
Preparing to unpack .../firmware-misc-nonfree_20190114-2_all.deb ...
Unpacking firmware-misc-nonfree (20190114-2) ...
dpkg: error processing archive /var/cache/apt/archives/firmware-misc-nonfree_20190114-2_all.deb (--unpack):
trying to overwrite '/lib/firmware/dvb-fe-xc5000-1.6.114.fw', which is also in package armbian-firmware 21.02.2
d
...
So it seems, there is the same firmware package in different packages...but idea, because armbian-firmware 21.02.2 miss the mt7* firmware, which is required to use the wifi expansion module of the nanopi neo3.
So, I think the pakcage mantainer should resolve this issue.