Xiaomi stuck in fastbot mode while bootloader is locked I've found my Xiaomi redmi note 4 stuck in fastboot mode after the battery had died. I tried different ways to unbrick it but nothing helps. The list of ways I tried:

platform tools fastboot binary. fastboot reboot bootloader - still
rebooting to fastboot.
 Also, adb binary doesn't recognize my device.
I can't use mi unlock tool because it doesn't see my phone.
Miflash doesn't recognize the device also.

Are there any other ways to unbrick it?
Edit: It's Mediatek Helio X20
The problem was not in fastboot mode. The reason was that my volume button was shortening and was always pressed. Fixing the button solved the issue.