If you want, I can:
. Because of BlackBerry’s proprietary "DTEK" security architecture, the bootloader is locked. This means you cannot install custom ROMs (like LineageOS); you are limited to official signed firmware builds provided by BlackBerry or TCL. Finding the Right Build Firmware for the KEY2 is categorized by PRD (Product Revision Detail) Autoloader blackberry key2 firmware
The BlackBerry KEY2 (model BBF100-1/2/3/4/6) runs on (upgradable to Android 8.1 only – no official Android 9/10). Firmware includes: If you want, I can:
In our testing, the phone's 3500mAh battery provided: Finding the Right Build Firmware for the KEY2
The core of the Key2’s firmware was Android 8.1 Oreo, later upgraded to Android 9.0 Pie. Unlike the BlackBerry 10 OS of the past, which was a proprietary real-time operating system, the Key2 ran on a modified version of the Linux kernel common to all Android devices. However, the firmware was distinct for its heavy customization. TCL implemented a "skin" over stock Android that emphasized productivity and security—two pillars of the BlackBerry legacy.
Essential apps or security features stop functioning correctly.
Since official BlackBerry servers are down, community members on the CrackBerry Forum