macbook pro software

Check to make sure your applications are compatible.        

Application Compatibility

El Capitan 10.11 Compatibility information 

Also check to make sure there is a compatible driver for your printer.

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

Your model cannot run Mojave. The last version of macOS compatible with your model is 10.11.6, El Capitan. How to upgrade to OS X El Capitan - Apple Support.

Your computer can't be upgraded past El Capitan.

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The same applies.

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