How to install Lineage OS (LOS) 17 (Android 10) on Xiaomi Redmi K20 Pro / Mi 9T Pro (Raphael)

Finally, a lineage OS (LOS) 17 custom ROM is now available for Xiaomi Redmi K20 Pro/Mi 9T users. The new ROM is based on the latest Android 10 Q. It is actually an unofficial ROM but it is very stable.

Lineage OS (LOS) is an Android Open Source Project (AOSP) based custom ROM which offers users with increased performance and reliability over stock Android ROM. It also comes with a whole lot of awesome and useful features.
Make sure you carefully go through the instructions below before installing the ROM on your phone.

Changelog:

• INITIAL BUILD

How to install LOS 17 on Redmi K20 Pro - Raphael

• Make sure you have Twrp recovery installed on download from the Link below
• Wipe data, cache, and dalvik
• Flash Vendor and firmware (download based on your device) 

• * Download Chinese Q vendor and firmware

• * Download Indian Q vendor and firmware
• Flash Lineage 17.0 ROM
• Flash OpenGapps 
• Flash Magisk
• Flash DFE (optional: if decrypted)
• Reboot to system

Note: If you get black screen after reboot, just wait for 1 minute. It is updating your firmware.

Downloads:

• Twrp Recovery for REdmi K20 Pro (Raphael): Download HERE.
• LineageOS 17 for Raphael: Download HERE.
• Gapps: Download HERE or HERE.

Source: XDA