Official Havoc-OS v3.11 for Redmi Note 9S/9 Pro/9 Pro Max/Poco M2 Pro (Miatoll)

The official HavocOS custom ROM for the Xiaomi Redmi Note 9 series has just been released. This is the HavocOS v3.11.  This particular version is a unified Miatoll version which means it is for the Redmi Note 9, Redmi Note 9 Pro, Redmi Note 9 Pro Max, Redmi Note 9s and the Poco M2 Pro.

This ROM doesn't really come with much changes other than a few optimization and bug fixes. It is also an official ROM which means it is definitely very stable. Below is the full changelog and download links.

Changelog HavocOS v3.11 for Redmi Note 9/9s/9 Pro and Poco M2 Pro (Matoll)

• Update Redfin's Mei
• Merge linux-stable v4.14.233
• Add hotword input for hotword mic concurrency
• Remove zygote prop
• More improvement stability and performance

How to install Havoc-OS ROM on Red mi Note 9 / Poco M2 Pro - Miatoll:
Requirements:

• Twrp for Redmi Note 9/9S/9 Pro: Download Here.
• Havoc OS v4.5 (Android 11) for Redmi Note 9s / 9 Pro / Poco M2 Pro series Miatoll: Stock Variant - Download Here 
• Havoc OS v4.5 (Android 11) for Redmi Note 9s / 9 Pro / Poco M2 Pro Miatoll: GApps Variant - Download Here or Here
• GApps: Download Here.
• Magisk: Download Here

How to Install:

• Make sure you have a Twrp recovery installed or download from the link above
• Downloaded the latest Havoc ROM, GApps and Magisk
• Copy all the downloaded files to your phone internal storage 
• Boot into recovery. 
• Wipe system, data, cache and Dalvik cache
• Wipe all in "Advanced Wipe except otg and sd card"
• Flash the Havoc OS ROM Build
• Flash Gapps (only needed if you installed the Non-Gapps variant)
• Wipe cache/Dalvik
• Reboot to system

Note:

• If you want to root, then you can go ahead and flash Magisk "after the first boot".

Source