T33469 /disc/ Installing old addons in firefox 51.0

Thread 33469

Age: 226.66d Health: 100% Posters: 3 Posts: 7 Replies: 4 Files: 0

Joshex 12dec2024(th)20:28 No.103041 OP P1

Installing old addons in firefox 51.0

so, my harddisk was on it's way out, was making a clicking noise but functioned well. so I decided to try to ghost it to a new harddisk, that failed because a readwrite head musta been busted. sigh. so I got a new copy of windows 7 installed and then needed to reinstall all my software.

Firefox 51.0 is the last firefox that you can stop from updating that allows flashplayer.

flashplayer was fairly easy to install. albeit I have unbricked 32 instead of 31 set to version 33 like before (to disable the "outdated plugin" message)

but all my other precious addons were no longer available! luckily I had a backup computer with all the .xpi files and a working firefox 51.0 installation so I could copy some files over, and if you get an xpi you too can install it in an old firefox by the following:

in firefox, go to about:config and search for "xpi" then toggle xpinstall.signatures.required to false.

you might need to create a folder called "extensions" in "C:/Users/yourusername/AppData/Roaming/Mozilla/Fi refox/Profiles/yourprofile.default/" in this extensions folder insert your .xpi files.

now in C:/Users/yourusername/AppData/Roaming/Mozilla/Fir efox/Profiles/yourprofile.default/ you need to modify the addons.json and addonStartup.json.lz4

what you don't have addonStartup.json.lz4? you'll need to copy it from an older ff51 install that includes the addons. if you don't have that it is a binary file so I can't help. you could try without it and see if it auto generates this file on browser restart after accepting addons you installed this way.

when you open firefox after this, it will open tabs asking if you want to accept the addon, check the box and accept. congrats your old addon works.

some addons like adblockerultimate may force you to update that one addon before the browser stops disabling it. but things like downthemall the download manager, or advanced cookie manager and older versions of noscript install this way just fine.

Anonymous 14dec2024(sa)19:02 No.103042 A ~~P2R1~~

>>103041
I'd advise you to migrate from an old outdated firefox to palemoon.
As of now you can (still) install every old NPAPI plugin from firefox (unless they're extreemely dependent on modyfing specific browser parts - but I found a palemoon replacement for every one yet).
Flash works like a charm and swfchan provided file replacements so that you can install and use the last version releases no problem.

It is in most regards just like the old pre-modern version of firefox, only that it gets modern security fixes and not as much broken web compatibility. Like, if it doesn't work anymore on old firefox it will never work again, but on palemoon updates regularely recover lost chromeshit pajeet code websites to work properly again. That's the reason I switched from my firefox installation.

There was basilisk also which is the same thing only with a modern interface like current year firefoxes, if that's more your thing, but I'm not sure if that one wasn't discontinued not too long ago.

Joshex 7may2025(we)14:40 No.103928 B ~~P3R2~~

>>103042
yeah, I've been strongly considering palemoon, especially since mozilla killed the addon signing server for npapi addons so now by default firefoz disables them because it can't connect to the signing server. (I had to go in and hack some settings, but even with that I cannot install Advanced Cookie Manager without firefox complaining and booting all my addons. I also had to set the update timer to 199999999 where it was 60000 which is like 48 hours. so I have 30 years til I need to deal with this again lol.

but yeah if palemoon allows me to install advance cookie manager by jayapal then I might switch everything over to that.

Anonymous 7may2025(we)19:31 No.103929 A ~~P4R3~~

>>103928
Not sure if that specific version of a cookie manager will work (because maybe they are kinda dependend on the browser architecture), but I use Cookies Manager+ and it does all the things it needs to.
Only addon-related thing that changed is that NoScript really bit the dust because nobody gave a fuck to further develop the old versions that gets used by XUL browsers, but I gave eMatrix a try and after some getting used to it basically does the same thing, even better if you ask some.

Yeah, been using palemoon as my goto browser ever since the "end" of flash. Only in like 1% of cases do I need to fire up that modern firefox sitting on the bench.
Currently there was some hefty bullshit going on with cloudflare literallly gatekeeping which browsers can access the internet and palemoon obviously was none of those, so they had big problems with behind cloudflare protection websites not being able to load, but as of now that seems to work again at least. Not sure if it's temporary of finally resolved, but that was the 2nd largest wall I ever faced with palemoon, with only 1 other example. Maybe it's not as fast as a browser could be? Rarely I experience such issues though and the eventual crash with the 32-bit version (never had those with 64-bit but my PC is too old for that now). Apart from that it's been very fine, especially because you can still use flash-in-browser (on /f/ at least, wouldn't recommend enabling it everywhere). Big thanks to Ants again for the plugin edits and the many anons who researched the timebomb.

So yeah, firefox is for dummies and you're at fault if you use it and complain.
tl;dr: Don't home that chrome.

Joshex 9may2025(fr)19:10 No.103951 B ~~P5R4~~

>>103929
new firefox is just a google subsidiary. old firefox (51.0) is a different thing entirely.

I use old noscript in FF51, Adblocker Ultimate (old version), and down them all download manager.

I used to use a user agent switcher as well, but the menu broke for it. and it glitches my addon hacking and may cause my addons to be deinstalled.

Advanced Cookie Manager allowed live deletion of specific cookies and live cookie value editing. that was fun to go into a spyware vendor (google, cloudflare etc.) cookie and change the value from whatever garbled value they set to "Cease and Desist".

oh well. I am sad I can't do that any more.

Joshex 8jul2025(tu)21:10 No.104643 B P6

Recently I managed to get most of my addons installed in palemoon, just excluding my old user agent switcher.

the following XPIs may be useful to palemoonites:
Advanced Cookie Manager (as an XPI, accepted in palemoon)
https://files.catbox.moe/e313ss.xpi

rename file to "[email protected]"

Enjoy.

to install go into palemoon>tools>addons

select the Gear Icon dropdown menu next to the addon search box> select "Install Addon From File">

navigate to the addon in the window that pops up, select [email protected]> install.

the CM button should appear next to your URL field, click it to use this addon's window to browse through and modify and/or monitor and/or delete individual cookies.

make sure to modify any spyware vendor cookies like google and facebook to have a value of "C&D By order of US courts you are to Cease and Desist from gathering any data about this device, it's software, files, or users or thier interactions; without a police issued warrant to search the device served in person issued by a court you presented evidence of probably cause to."

Adblock ultimate:

https://addons.cdn.mozilla.net/user-media/addons/ 686646/adblocker_ultimate-2.26-an%2Bfx.xpi?filehas h=sha256%3A14027bf04d4a5ad3ea548165805e853b4fb1afd 5a4c19372a830d75e86beb366

this addon will let you block not just ads, but in video ads as well (such as on youtube) it automatically blocks them.
it also has a select element feature, which allows you to preview the removal of or remove an object or objects like it from a given page. this is helpful for removing ads listed as an email entry in your inbox on sites like yahoo, or completely removing those ToS overlays that say things like "agree to our terms of service to continue using the site" which will allow you to view said sites without agreeing.

Joshex 24jul2025(th)16:18 No.104740 B P7

heres the text of my google cookie. I suggest it to everyone. also just change the name of the spyware party and you can add this same cookie for any adware or spyware or tracing service:

Domain: google.com
Name: C&D
Value:
Google, thier partners, and any third or Nth parties working with google are hereby to Cease and Desist from collecting any data (about this machine, it's software, it's files and or it's users and or the users' habits, browsing, use or otherwise) without a SEARCH WARRANT issued by the United States of America judicial system to which sufficient evidence of probable cause that a crime has been commited by this device has been submitted.
In event such a search takes place, the data may not be stored nor used for any other process except legal proceedings against this one machine and it's user. It may not be shared with third-parties at all.
Mishandling this data, or searches of this device or it's data, with or without a warrant which fail to find further incriminating evidence will result in Google (Alphabet)'s acknowledgement that they are to restitute FINANCIAL DAMAGES to this user to the sum of $1,000,000,000,000.