Because the autoloader is signed by BlackBerry’s private key, it will flash even with a locked bootloader. However:

As of 2026, finding official autoloader files has become difficult because BlackBerry discontinued hardware and software services in 2022. Many official download pages have been removed. Mobile Upgrade Tool : Many users recommend the BlackBerry Mobile Upgrade Tool

: Running a "full" autoloader (specifically the wipe script) completely obliterates all data, bypasses standard lock screens (though not Factory Reset Protection), and reinstalls the OS. The 2026 Landscape: Accessibility & Risks