The latest firmware images for Openwrt & APRX have been uploaded in januari 2017. See the download section.
Ans see Google groups for more info…. https://groups.google.com/forum/#!forum/aprx-software
To install just the package, do as follows….
ssh into your machine (normally something like sss root@(ip-of-machine)
Then change into the tmp directory and execute:
chmod 755 aprx_2.9.0-Stable_brcm47xx.ipk
opkg install aprx_2.9.0-Stable_brcm47xx.ipk
In case the installer tells you that you have already the latest package, change the command into:
opkg install aprx_2.9.0-Stable_brcm47xx.ipk –force-download
You can test which version you are running:
type aprx -V from the prompt
currently on openwrt the version nummer is not correct but instead will show: 5.05-333-g160eb5d