Mid-2021 I noticed it seems like Ubiquiti has quietly discontinued their EdgeRouter lines (they’re increasingly sold out, there haven’t been firmware updates in a while), and since I like to keep my devices’ firmware up to date I became a little concerned.
In looking for solutions I eventually found I could extend the life of my EdgeRouter 4, which is otherwise pretty solid hardware, by installing OpenWrt. Luckily I already had a USB-to-serial cable on hand, and with that it was pretty straightforward, following the OpenWrt project’s instructions for EdgeRouter devices.
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