I have an installation with UAP-AC-EDUs which is AC-PRO with a loudspeaker connected to it (the product is discontinued). I'm using the SIP feature where the unit has baresip client. I want to add Opus codec (or something better than g711/alaw). My idea was to try update just baresip packages from the recent repository.
I've tried to create /etc/opkg/customfeeds.conf containing this (I also tried lede-project.org):
Because it is limited system with just busybox, there is no /etc/opkg/keys, no openwrt-keyring, opkg doesn't know option check_signature (opkg version 9f61f7acf3845d2e09675b49fec5d783d57eb780 (2017-12-08)).
I don't know how to skip this check or if I'll have to prepare my own repo and somehow sign it to pass.
your upgrade path for best succes will likely be 17.01 (current) > 18.06 (ar71xx) > 19.07 (ath79) > 22.02 (ath79).
Reset to defaults before you start, and do not keep settings on each of the upgrades. The upgrade from ar71xx > ath79 will show a scary warning about an unsupported image... go ahead and force the ugprade (make sure you've selected the correct file and that the checksum matches what is shown on the download site).
Thanks guys, if it is no chance to do it w/o upgrading the whole system, I'll try to upgrade as suggested by @psherman. I'm a little worried about resetting to defaults. I'm not sure if I'll be able to adopt that AP later in the Controller. ... but I'll see.
Btw. for the record, AC-EDU is AC-PRO with some different signature because UniFi Controller is showing just EDU and also EOL product, so I can't upgrade its firmware in an official way.