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You cannot update Firefox 115.33.0esr to 115.34.0esr ?
https://support.mozilla.org/en-US/kb/firefox-users-windows-7-8-and-81-moving-extended-support
Or are you hoping to install Firefox 149.0 or 140.9.0esr?. You cannot as Firefox 116.0 to current requires Windows 10, 11 to run.