how to install latest safari version

Hi Shailmishra31,

Thanks for reaching out to Apple Support Communities. It sounds like you have a question about Safari and installing macOS Mojave. We're happy to help.

You can find details about macOS Mojave here: macOS Mojave - Technical Specifications

This includes the hardware requirements which are as follows:

"Mac Hardware Requirements

For details about your Mac model, click the Apple icon at the top left of your screen and choose About This Mac. These Mac models are compatible with macOS Mojave:

• MacBook (Early 2015 or newer)
• MacBook Air (Mid 2012 or newer)
• MacBook Pro (Mid 2012 or newer)
• Mac mini (Late 2012 or newer)
• iMac (Late 2012 or newer)
• iMac Pro (2017)
• Mac Pro (Late 2013; Mid 2010 and Mid 2012 models with recommended Metal-capable graphics cards)"

To help install older versions of macOS you can check out the steps here: How to get old versions of macOS

As mentioned in the article you started this post from, updating your macOS will ensure you have the latest version of Safari available.

Best!