Before continuing, make sure that your iOS device is plugged on your computer via USB and the screen is unlocked. Close any iTunes popups that come up after you plug it in.

After downloading both files:

On Windows: Extract the Cydia Impactor download into a folder, then open Impactor.exe

On OS X: Open the Cydia Impactor Download, then double click on Impactor

If you see this message after opening the download, that’s normal, click on Open

After opening Impactor, you’ll see something like this:

If your iOS device isn’t listed on the dropdown above, it means your computer isn’t recognizing it. Make sure it’s plugged in and the screen is unlocked or you won’t be able to proceed.

Click on Device > Install Package…

Select the Ark Mobile.ipa file you downloaded earlier

Before Impactor installs the wallet, you’ll see this:

Type your Apple ID and password so Impactor can install the app. This is the same Apple ID and password that you use to download new apps on the App Store.

Note: If you have 2 Factor Authentication enabled on your iCloud account (you should!), your regular Apple ID password won’t work. To continue, you need to login on https://appleid.apple.com/account/manage — Scroll down to Security, and generate an App-Specific Password: