Форум сообщества Firefox

I have Mac 10.12.6 on an "early 2009" 27" iMac. I'm waiting for the new 27/32inch iMac until I upgrade hardware and operating system. The release notes with FF V115 say in part " Users on those operating systems will be migrated to the ESR 115 version of Firefox."

I want to clarify that when I update to FF 116, FF will automatically install the ESR version, or will I need to do this manually? Also, will this update take a long time, like FF will be installing a totally new (ESR) version, rather than "just" the usual update?

I'm getting unwanted redirects when using google search on certain sites. I have cleared the cache, turned off extensions and scanned for malware (none found). See the attached screenshot.

Firefox 115.1.0 iMac Sierra