This means the Android app you downloaded is too modern. The BlackBerry Passport's Android runtime only supports apps compiled for Android 4.3 or older. Look for "Lite" versions of apps or search APKMirror for versions released around 2015–2017. 2. App Opens but Instantly Closes (Crash)

The process involves carefully disassembling the BlackBerry Passport, removing the old Qualcomm Snapdragon board, and installing the new board.

This is a project for tinkerers, not daily drivers.