Q: I have version 10.7.5. Is there another version I should update?

The current OS is El Capitan (10.11.2).  In order to use the most current version of Safari, you need to upgrade your operating system.  However, before you can do that, you have to make sure your computer can support it.  What year and model is your computer?

If you want to stay with 10.7, try Firefox which is still being updated.

Firefox

Check that your computer is compatible with Mountain Lion/Mavericks/Yosemite/El Capitan.

To check the model number hold down the option/alt key, go to the Apple menu and select System Information.

      iMac (Mid 2007 or newer) model number 7,1 or higher

      MacBook (Late 2008 Aluminum, or Early 2009 or newer) model number 5,1 or higher        

      MacBook Pro (Mid/Late 2007 or newer) model number 3,1 or higher

      MacBook Air (Late 2008 or newer) model number 2,1 or higher

      Mac mini (Early 2009 or newer) model number 3,1 or higher

      Mac Pro (Early 2008 or newer) model number 3,1 or higher

      Xserve (Early 2009) model number 3,1 or higher

Your Mac needs:

      OS X v10.6.8 or OS X Lion already installed

      2 GB or more of memory (More is better - 4 GB minimum seems to be the consensus)

      8 GB or more of available space

Check to make sure your applications are compatible. PowerPC applications are no longer supported after 10.6.     

Application Compatibility

Applications Compatibility (2)

El Capitan 10.11 Compatibility information

Do a backup before installing, preferable 2 backups on 2 different drives.