Redmi K30 Ultra China Stable V12.0.11.0
OTA Apply to V12.0.8.0
https://hugeota.d.miui.com/V12.0.11.0.QJNCNXM/miui-blockota-cezanne-V12.0.8.0.QJNCNXM-V12.0.11.0.QJNCNXM-6b718d426f-10.0.zip
Recovery ROM
https://hugeota.d.miui.com/V12.0.11.0.QJNCNXM/miui_CEZANNE_V12.0.11.0.QJNCNXM_16f2237b09_10.0.zip
>>> All firmware: xiaomifirmware.net