Download MIUI V22.214.171.124 China Stable Fastboot ROM for Xiaomi Redmi 6 Pro from here.
Download MIUI V126.96.36.199 China Stable Recovery ROM from here. Download MIUI V188.8.131.52 India Stable Recovery ROM from here. Download MIUI V184.108.40.206 Global Stable Fastboot ROM from here. Download MIUI V220.127.116.11 Global based on Android 9 from here.
Archive name: sakura_images_V18.104.22.168.PDICNXM_20200615.0000.00_9.0_cn_abd074d012.tgz
Archive size: 2.1 GB
Xiaomi device code name: sakura
Caution Please do not update firmware unless you know what you are doing, you really want it or it is absolutely necessary. Firmware updates may occasionally have bad results, like bricking your device, temporarily or permanently. The firmware update process is done entirely at your own risk. Before attempting to update the firmware, back up your data. BTW, a link doesn’t last forever.