No functioning custom ROMs exist for the BlackBerry Passport because of a permanently locked bootloader and proprietary hardware, limiting modifications to app sideloading within its native BlackBerry 10 OS. While the device can run select Android 4.3 apps, the lack of modern Google Play Services restricts functionality. For more details, visit BlackBerry .
The few "custom ROMs" you might find on obscure Russian or Chinese forums are almost certainly malware, or they are simply stock autoloaders (factory reset files) mislabeled. One cannot flash LineageOS 20 onto a Passport because the Passport's CPU (Snapdragon 801) is 32-bit and lacks the required boot chain for modern Linux kernels. blackberry passport custom rom
The only successful "custom" software available are modified versions of the stock BlackBerry 10 OS. No functioning custom ROMs exist for the BlackBerry
Before you begin, make sure to backup your data, including your contacts, photos, and any important files. Unlock bootloader (if required and possible for Passport)
But if you want a device that silences notification spam, forces you to type intentionally, and looks like you’re piloting a starship when you take a call? Flash that custom ROM.
crackutil to enter engineering mode.debrick script to remove the secure boot checks.