Installing a full version of Android on a original BlackBerry Passport is a complex process that has transitioned from "impossible" to a "niche hardware mod." While the device natively runs with a limited Android 4.3 runtime, modern enthusiasts have found ways to swap the internal hardware or exploit the bootloader to run newer Android versions. The Resurrection: How to Get Android on a Passport

Installing Android 5.1 in 2023 presents severe functional limitations:

Ensure your device is connected to a functional wireless network. Step-by-Step Guide to Installing Android Apps

The device checks the operating system's signature at startup. If the OS is modified, the phone will refuse to boot.