[fwn]

> Not impossible, at all. The answer is Firefox Nightly or Firefox Developer, you're freely to install unsigned addons in these editions.

I do use Firefox for Android Nightly. How would I install an unsigned addon there?

I don't think it's possible. ... but if it were, this would be very useful to get the Anti-Paywall addons back.

[NBPEL]

It's called Sideload XPI, iirc Firefox Nightly allows you to sideload XPI if you enable Experimental by tapping Firefox logo in About 7 times.

But it's easier with Ice Raven or Smart Cookie Web Preview:

- https://old.reddit.com/r/browsers/comments/18ezd3g/iceraven_...

- https://github.com/CookieJarApps/SmartCookieWeb-Preview/rele...