Project https://github.com/Eclipse-Community/r3dfox as FF clone works on Win 7!
Latest offline installer of FF is at https://download-installer.cdn.mozilla.net/pub/firefox/releases/128.0/win64/en-GB/
Since version 125, VxKex can not run FF on Win 7....but unofficial build of VxKex 1.1.1.1376 work with 128.0.3 x64!
Unpacked FF 127/128 x86/x64 works on Win 7 by borrowing libs from r3dfox project of the same version. Libs are:
lgpllibs.dll
xul.dll
nssckbi.dll
- about:config does not work -> use about:confignew instead
- firefox.exe and privatebrowsing.exe need lower MajorOperativeSystemVersion and MajorSubsystemVersion (A -> 6).
Firefox.exe and private-browsing.exe are runnable on Windows Vista+.
Force closing after 1-2 minutes and user-agent are fixed. WebGL is enabled.
Manually add to firefox.js in omni.ja:
pref("browser.taskbar.lists.legacyBackend", true);
pref("general.useragent.compatMode.firefox", true);