Chosen Solution. ... Firefox 45.9. 0esr will be the most up to date version with security fixes that will run. ... The Firefox 48. Mozilla Support Directory Listing: /pub/firefox/releases/48.0.2/mac/en-US/ Directory Listing: /pub/firefox/releases/48.0. 2/mac/en-US/ mozilla.org Firefox 48.0.2 System Requirements
You can find the official installation files through the Mozilla FTP Archive . Firefox 48.0 2 Mac Download
For security and performance, Mozilla strongly recommends downloading the of Firefox. However, if you need this specific legacy version for testing or compatibility with old software, here are the details. Chosen Solution
This is the most common reason. Apple is known for aggressively dropping support for older Macs in their macOS updates. If a user is running a Mac that is stuck on OS X 10.9 (Mavericks), 10.10 (Yosemite), or 10.11 (El Capitan), they often find that modern browsers (like Chrome or current Safari) are either too resource-heavy or simply won't launch. 0esr will be the most up to date
Firefox 48.0.2 is lightweight compared to modern browsers. It runs smoothly on older Intel Core 2 Duo processors and machines with 4GB of RAM or less. For a 2009 or 2010 iMac or MacBook Pro, this version offers a balance of usability and speed that modern browsers cannot provide.