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Complex Firefox upgrade

Hi everybody. Thanks in advance for your help. I'm on Win 11 23H2, and I'm currently running Firefox 88.0.1 x64. Why? Because it's heavily customized to suit my needs. S… (read more)

Hi everybody. Thanks in advance for your help.

I'm on Win 11 23H2, and I'm currently running Firefox 88.0.1 x64. Why? Because it's heavily customized to suit my needs. Some examples:

  • Extensions (e.g. Classic Theme Restorer)
  • userChrome.css and userContent.css customizations ( https://github.com/aris-t2/customcssforfx ), which include tabs on bottom (mandatory for me), tab height/width, and many other things.

I decided a long time ago to stay with v88 because every new Firefox update was breaking things that I needed, and I got tired to spend hours with every new update. If only Firefox devs could find a way to NOT break user customizations with every new update...

Of course I'd like to update my Firefox to the latest version. But I know that it's going to be a nuclear bomb. I already made a test. First I made a backup of my profile folder, then I just updated Firefox. Suffice to say that not only all my customizations disappeared : even my tabs disappeared, and I have dozens of them. So I had to uninstall everything, copy back my previously saved profile folder (because of course it had been modified by the latest version), and reinstall Firefox 88.0.1.

So here's my plan and my question. Would it be possible to have two different Firefox installs (not portable I guess), with two different profiles, running at the same time?

  • Here's how I see it:
  • Download Firefox latest version
  • Close Firefox 88
  • Move profile folder away from AppData\Roaming\Mozilla\Firefox\Profiles, so Firefox latest version can't find it
  • Move Firefox folder (the one within Program Files) so hopefully Firefox latest version can't find it
  • Install Firefox latest version (it then creates a new user profile folder)
  • Start Firefox latest version
  • Move back the old Firefox folder to Program Files (so there will be two different Firefox folders, e.g. "Mozilla Firefox 88" and "Mozilla Firefox")
  • Move back the old profile folder to AppData\Roaming\Mozilla\Firefox\Profiles (so there will be two different user profile folders)
  • Start Firefox 88

Would that work, or am I missing something?

If it worked, then I could keep working on Firefox 88, while gradually customizing Firefox latest version until it's ready to take over.

Thanks in advance for your insights!

Asked by Jose de la Mancha 1 month ago

Last reply by Jose de la Mancha 1 month ago

problem non solved

Hello, I've already contacted you because of a problem that I encounter with the functioning of my browser that cracked without explanation. The problem was that I was wo… (read more)

Hello, I've already contacted you because of a problem that I encounter with the functioning of my browser that cracked without explanation. The problem was that I was working on inpravate navigation and I can't find back the internet pages that I was watching. I don't know if there is a possibility to reach them back and I'm afraid I'll can't get them if I turn my computer of.

I need a quick answer because I'm afraid that my computer could crash because it's lit since a while.

Thank you for your answer.

Asked by queiroz_eva 2 weeks ago

Urgent problem unsolved

Hello, Sorry to contact you again but my problem is still not solved and it's urgent. I still doesn't have turned my computer off in case that you could help me find my… (read more)

Hello,

Sorry to contact you again but my problem is still not solved and it's urgent.

I still doesn't have turned my computer off in case that you could help me find my pages back. I have no one else to help me with this problem and I deeply need the websites I was surfing on. I'm not sure I can find them by myself and I don't have much time for that.

Thank you for helping me and answering my request.

Asked by queiroz_eva 2 weeks ago