Before Upgrading to macOS Big Sur 11.5: What You Need to Know

When considering an upgrade to macOS Big Sur 11.5, it's essential to prioritize your system's security and stability. The built-in security features of Big Sur are more than sufficient, so any additional software can actually cause harm by interfering with the normal operation of your operating system.

Before attempting the upgrade, there are several points to consider:

1. Resolve pre-existing issues: Are there any unresolved software problems on your current macOS installation? These issues may carry over to Big Sur and render your system unstable or unusable.

2. Remove unnecessary software: Check if you have any antivirus programs, disk cleaners, optimizers, uninstallers, or other third-party applications installed that are not recommended by developers. Remove them according to the manufacturer's instructions.

To ensure a smooth upgrade process, it's crucial to perform due diligence as a user. This includes:

* Checking for software issues

* Removing unnecessary applications

* Backing up your data

When upgrading from High Sierra to Big Sur 11.5, you'll need to download the full installer and run it from the Applications folder.

There are several ways to download Big Sur 11.5, including restarting your computer in Recovery Mode (Command + R) and reinstalling macOS. Alternatively, you can connect your computer to a router via Ethernet, restart in Safe Mode, and then open the Apple App Store to download the full installer.

If you're already running Big Sur 11.xx and want to upgrade to Big Sur 11.5.1, you'll need to use a different method. It's essential to understand that updating Big Sur implies that the operating system is already installed, whereas upgrading typically involves moving from an older version of macOS, such as High Sierra.

Unfortunately, if your computer won't let you update to Big Sur 11.5.1, there may be issues with your current installation or software configuration. In this case, it's recommended that you seek assistance from Apple Support or a professional IT expert to resolve the issue and ensure a successful upgrade.

Mac os 11.5