This tutorial by user Vinícius Zavam shows us how to upgrade your FreeBSD 10.2 to version 10.3. See the link below for the full instructions.

Introduction

FreeBSD is constantly evolving; the team is adding new features and patching security vulnerabilities. Keeping your server operating system up to date ensures better security and compatibility, and FreeBSD includes the freebsd-update tool to make this easy. In this tutorial, you’ll upgrade an existing FreeBSD server running FreeBSD 10.2-RELEASE to 10.3.RELEASE-p4.

Prerequisites

To follow this tutorial, you will need:

  • A server running FreeBSD 10.2.
  • A user account configured to run commands with sudo. We will use the default freebsd account which is created automatically when you create a FreeBSD Droplet. To learn more about logging into your FreeBSD Droplet and its basic management, check out the Getting Started with FreeBSD tutorial series.

Step 1 — Fetching and Applying Patches

In order to upgrade the operating system, we first need to fetch the packages and patches for our destination release. Log into the server with the freebsd account.

  • ssh freebsd@your_server_ip

Then, use the freebsd-upgrade command to gather information about the system upgrade and determine what needs to change. Run the following command:

Full tutorial: https://www.digitalocean.com/community/tutorials/how-to-upgrade-freebsd-from-version-10-2-to-10-3