How to install MetaMask manually

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While MetaMask is published on multiple browser extension stores, and these stores benefit from auto-updates, there are reasons you might want to install a copy of MetaMask manually. For example, you may be using an old, unsupported dapp that no longer works with the latest version of MetaMask. Or maybe you're just nostalgic? That's cool too.

注意

Before you do this, be aware:

• Old builds are missing critical security updates, including for vulnerabilities that have been publicly disclosed.

• When you manually install an extension, you no longer benefit from the robust security controls that e.g. Google Chrome typically provides, such as built-in integrity checks that ensure you're not running a malicious version of MetaMask.

• Once you install manually, you are responsible for updating your extension. Failing to update exposes you to future security issues.

Did someone on the internet tell you to install a version of MetaMask manually?

• If someone is directing you to do this, they're probably a scammer; they're probably going to steal all your crypto, and no one will be able to help you. Just as with everything else online, don't believe advice at face value.

So, if you know what you're doing, and you're ready to install MetaMask manually:

The easiest thing to do is to download a pre-build release of MetaMask. You can retrieve official builds of MetaMask here. If you're a Brave developer, you can also build from source.

See below for instructions for different browsers:

Chrome

1. On the releases page, pick a version you'll like to install.

2. Download the zip file.

3. Unzip the file in a folder.

4. Open Chrome, and type “chrome://extensions” in the browser URL bar.

5. Click "Load Unpacked"

6. On the window pop up, open the the folder unzipped earlier

7. MetaMask should now be installed.

Firefox

NOTE: this method requires Firefox Developer edition.

1. Visit: https://addons.mozilla.org/en-US/android/addon/ether-metamask/versions/

2. Select a version you 'd like to download. Click “Download Now”, and then click “Ok” on the pop up that appears.

3. Type “about:addons” into browser URL bar

4. Click the Settings button > Click “Install Add-on from file”

5. Browse for the zip or directory with MetaMask you downloaded.

6. Click "Open"

7. Click "Add" on the pop-up

Your installation should be complete!

Opera

1. Repeat step 1 to 3 of the Chrome instructions above
2. Open Opera extension page > Click “Load unpacked extension”
3. Browse to the unzipped folder, then click “OK”
4. Installation complete