The most recent version of Dump1090 for OpenWRT that I have been able to find for my device has been from November 2014. I’ve also seen make files out there for building a newer version, provided that one has the appropriate tools and know-how, which I don’t.
Perhaps this is old news, but I recently noticed that a precompiled newer version, dated October 2nd 2016, is in the packages list for the bleeding-edge ‘trunk’ version of OpenWRT.
Using one of the pre-built trunk snapshots for my mini router, I upgraded from ‘Chaos Calmer’ to ‘Designated Driver’ and installed the web based configuration editor, Luci, and Dump1090-mutability. After a couple of very minor hiccups, up came the now-familiar Open Street Maps map along with the range-rings and coloured aircraft icons, exactly as hoped for.
I’m currently testing this indoors with a Nexx WT3020F travel router which has two ethernet ports and a USB port. (It’s actually a bit smaller than the ProStick Plus that’s plugged into it.) I chose to run it wired and so have not tried using the supposedly 300M wifi capability.
I know that others using OpenWRT have been looking for a more recent option than the 2014 version. For those that are willing to take the risk of running an experimental, and not always stable, version of OpenWrt, this may be a viable option to try.