MIUI 12 upgrade rolled back for the Xiaomi Redmi 9 as a new MIUI 11 update arrives in its place - NotebookCheck.net News
Redmi 9 MIUI 13 Update: Released for India [Updated: 25 December 2022] - xiaomiui
Latest supposed Xiaomi Android 11 update list upgrades the Mi 10 Ultra and Redmi 9 to internal testing and clarifies that no MIUI 9 launch devices will be updated - NotebookCheck.net News