

It's one of the beauties of the thing.īy the way, if you're trying ESR in advance of the death of Fx with the web-extensions concept to come in v.57, you might also want to have a look at Pale Moon. The point is, if you have enough copies of your various profiles, you can never really irrevocably wreck Firefox. Last but not least, if you're not happy with the results, you can make a copy of your Fx55 profile, rename it "Mozilla", open ESR, put your fingers in your ears, and see what happens. At this point, you might want to try to update Fx and your extensions manually, just to make sure you're on the latest version. It should recognize your old profile, and you should be good to go.

Assuming it's in your "Roaming" folder, rename your copy "Mozilla" if it isn't, copy it into the Roaming folder and do the same.Ħ. Go to your Roaming folder and rename the new "Mozilla" folder "MozillaESR" or whatever.ĥ. Fx ESR should open if it does, it will generate a new "Mozilla" folder in Roaming.Ĥ. Go back to the folder containing the unzipped Fx zip version, and double click firefox.exe. Rename your current "Mozilla" folder "Mozilla55" or whatever.ģ. Go into your "Roaming" folder or wherever you have your FX profile(s). Unzip it into a folder named F圎SR, but don't open Fx yet.Ģ. If you know how to use zip versions of FX, I'd grab this (assuming you want to use the 64-bit version and that you're using Win7, although Win10 should work the same):ġ.

To be honest, though, I've been using "candidates" for years and have never experienced a problem. exe, a relatively easy process for which there are lots of instructions here on the forum. Of course, you can always make a zipped version from the release. If you're concerned, and if what I'm about to describe works for you, when the "experiment" is finished, you can simply delete the zipped-version folder and install the release version. I'm pretty sure someone isn't going to like the advice I'm going to give you here because of the difference between the "candidate" and the "release" versions. If you have pre-55 profile backup, I think you can safely use it with the latest ESR.
