This little and inexpensive ($35) board is fully compatible to discontinued NanoPi M3. From a software point of view both boards are identical (though Wi-Fi is missing on the Fire3) and as such identical OS images can be used for both boards. The good news: compared to the last time I looked at the M3 kernel support has improved a lot. Back then we had to run a smelly 3.4.39 (32-bit only) while we can now run mainline on it.
I gave it a try using our Armbian Stretch nightly running w