Xiaomi Redmi 6a unbreak in dead mode with scatter firmware without authorization just one click.
"Xiaomi mediatek device flash firmware Without authorization"
Quote:
1-This feature need to disable windows driver signature
2-This feature no need unlock bootloader , auth and more ...
3-Just select scatter firmware in xiaomi » flash » mediatek section and checked "skip authorization"
4-Then power off device and hold volume up (+) and connect device.
No Risk
Good Luck:)