Signature Verification Failed Error 21 Installation Aborted, Sideload Magisk

Signature Verification Failed Error 21 Installation Aborted, Sideload MagiskMagisk is a popular tool for rooting Android devices. It offers a variety of features and functionality, including the ability to hide root from certain apps and pass SafetyNet checks. However, installing Magisk can sometimes be a tricky process, and users may encounter errors along the way. One such error is the Signature Verification Failed Error 21 Installation Aborted message. In this article, we'll explore how to sideload Magisk and troubleshoot common issues.

Before we dive into the details, let's briefly review what Magisk is and why you might want to use it. Magisk is a rooting tool for Android devices that allows users to gain root access while still maintaining the integrity of the system. This means that users can enjoy all the benefits of rooting, such as installing custom ROMs and mods, while still being able to use banking apps and other apps that typically don't work on rooted devices.

Pre-Requisites

Before you can sideload Magisk, you'll need to have a custom recovery installed on your device. This is because Magisk is installed via a custom recovery, such as TWRP or CWM. You'll also need to download the Magisk zip file from the official Magisk website.

Sideload Magisk using Custom Recovery

Once you have your custom recovery and Magisk zip file, you're ready to sideload Magisk onto your device. Here's a step-by-step guide to help you through the process:

1. Power off your device and boot into your custom recovery by holding down the power button and volume down button at the same time.

2. Once you're in the custom recovery, select "Install" and navigate to the Magisk zip file that you downloaded earlier.

3. Select the Magisk zip file and swipe to confirm installation.

4. Wait for the installation to complete and then reboot your device.

It's important to note that the above steps may vary slightly depending on your specific custom recovery. However, the general process should be the same.

Verifying Magisk Installation

After you've installed Magisk, you'll want to verify that it was installed correctly. There are a few different ways to do this:

• Checking Magisk version

Open the Magisk Manager app and check the version number to ensure that you have the latest version installed.

• Checking SafetyNet status

Open the Magisk Manager app and go to the "SafetyNet" tab to check your device's SafetyNet status. If the status shows "pass," then you should be good to go.

Checking for Root Access

If you've installed Magisk successfully, you should now have root access on your device. Here are two ways to check for root access:

• Using Root Checker app

Download the Root Checker app from the Google Play Store and run it to check for root access.

• Checking build.prop file

Using a file manager app, navigate to the system folder and open the build.prop file. Look for the line that says "ro.build.tags=test-keys." If this line exists, then you have root access.

Using Magisk Manager

Now that you have Magisk installed and verified, you can start using the Magisk Manager app to take advantage of its features and functionality. Here's an overview of what you can do with Magisk Manager:

• Manage modules: Magisk modules are add-ons that you can install to add extra functionality to your device. You can browse and install modules directly from the Magisk Manager app.
• Hide root: Some apps may not work on rooted devices. Magisk Manager allows you to hide root from these apps so that you can still use them.
• Pass SafetyNet: As mentioned earlier, Magisk can help you pass SafetyNet checks. You can check your device's SafetyNet status from within Magisk Manager.

Troubleshooting

If you run into issues during the installation or use of Magisk, don't panic. Here are some common issues and solutions:

• Signature Verification Failed Error 21 Installation Aborted: This error can occur if you're trying to install an outdated version of Magisk. Make sure you have the latest version installed.
• Magisk not installing: If Magisk isn't installing, try wiping the cache and dalvik cache in your custom recovery before attempting to install again.
• SafetyNet check failing: If your device is failing SafetyNet checks, try installing the MagiskHide Props Config module from the Magisk Manager app.

Magisk is a powerful tool for rooting Android devices, but it can be a bit tricky to install and use. By following the steps outlined in this article, you should be able to sideload Magisk and start enjoying all the benefits that come with rooting. If you run into any issues, don't hesitate to reach out to the Magisk community for help.