From time to time, as Magento improves its platform features, or to address bugs and security issues, you will receive a notice that your system needs to be upgraded. With Magento 2, this upgrade process is made infinitely easier and better than in Magento 1.x.
If you are versioning your Magento installation, you should not upgrade your production installation using our instructions here. Rather, upgrade your development environment, test, and then promote your code to your production server.
In order to keep your Magento installation upgraded, you must take certain steps:
In order for your store to communicate ...