Redmi Note 9 4G China Stable V12.0.12.0
OTA Apply for V12.0.11.0
https://hugeota.d.miui.com/V12.0.12.0.QJQCNXM/miui-blockota-lime-V12.0.11.0.QJQCNXM-V12.0.12.0.QJQCNXM-50f7d59db7-10.0.zip
Recovery ROM
https://hugeota.d.miui.com/V12.0.12.0.QJQCNXM/miui_LIME_V12.0.12.0.QJQCNXM_176dc635fd_10.0.zip
>>> All firmware: xiaomifirmware.net