Your warranty might not be void (thanks Xiaomi). However... I am not responsible for bricked devices, dead SD cards, thermonuclear war, or you getting fired because the alarm app failed. Please do some research if you have any concerns about features included in this RECOVERY before flashing it! YOU are choosing to make these modifications, and if you point the finger at me for messing up your device, I will laugh at you.
TWRP by skkk im NOT the Developer of this TWRP im Just Sharing it here with a Guide. ALL CREDITS GOES TO SKKK
1 : DOWNLOAD THE TWRP.img
2 : Put device into Fastboot mode (hold vol - down and power button)
3 : write command : fastboot boot "TWRP.img" (put here the path where the twrp image is on your pc)
4 : in booted TWRP go to : ADVANCED - FLASH CURRENT TWRP
5 : Reboot and done
Kernel Source : https://github.com/MiCode/Xiaomi_Kernel_OpenSource/tree/psyche-r-oss