Sorry, no, the Extended Support Release of Firefox 115 is the last version for Windows 7, which the last minor updating coming in March 2025 (unless it gets extended again). Where did you get a message that you need to update? Is that coming from a website?

Am I going to loose my Firefox browser in March 2025? I use Windows 7; I am 74 I have hand tremors & arthritis so texting & data entry are hard to do without errors. I still use Windows 7 because I know how to use it. Hillary Morgan cell [edited phone# from public community support forum]

Actually there is some good news as Mozilla decided very recently to extend updates support for the older Firefox 115 ESR channel as 115.21.0esr in March was the last planned update. It will only be til Firefox 115.27.0esr in August though.

Firefox 115 ESR will still continue to work, just without anymore security/stability updates after and if you have any Extensions installed then you will not be affected by the root expiration as 115.13.0esr is the minimum you need. https://support.mozilla.org/en-US/kb/root-certificate-expiration

Every web browser based on Chrome/Chromium already dropped support of the eol Windows 7, 8, 8.1 back in Jan/Feb 2023.

See also https://support.mozilla.org/en-US/kb/firefox-users-windows-7-8-and-81-moving-extended-support now that it has been updated.