Installing Android KitKat (version 4.4) on a modern Android device in 2021 (or currently) is a complex task that appeals mostly to developers, retro-tech enthusiasts, or those trying to revive very old hardware.
Only for nostalgia or hardware rescue.
In the same command prompt, type: fastboot flash recovery twrp-name-of-file.img Once finished, manually boot into recovery by holding the specific button combo (usually Power + Volume Down). install android kitkat v44 on any android device 2021
Modifying your device software carries risks of "bricking" your phone. Proceed at your own risk. This guide is for educational purposes for hobbyists and developers. Installing Android KitKat (version 4