Xiaomi 12S Ultra firmware (codename thor) below are the stock stable MIUI, which can be downloaded as Fastboot ROM, Recovery ROM and OTA Update.
Phone model name corresponds to 2203121C (China). Xiaomi ROM are downloaded free of charge from the official website bigota.d.miui.com. We post links to stock Xiaomi 12S Ultra flash files and original updates.
Download the latest MIUI version and new updates:
China 14.0.12.0.TLACNXM
Latest version of the stable Chinese firmware for Xiaomi 12S Ultra by Xiaomi.
- Version
- 14.0.12.0.TLACNXM
- System
- MIUI 14
- Android
- Android 13
- Release date
- 2023-04-09
- File size
- 6.11 GB
- Official Link
- Download (.zip)
- Changelog
- Expand list
- Version
- 14.0.12.0.TLACNXM
- System
- MIUI 14
- Android
- Android 13
- Release date
- 2023-04-15
- Flash file size
- 7.81 GB
- Official Link
- Download (.tgz)
- Changelog
- Expand list
Recovery ROM
Fastboot ROM
- Version
- 14.0.12.0.TLACNXM
- File size
- 712.09 MB
- Apply for
- 14.0.10.0.TLACNXM
- Official Link
- Download (.zip)
OTA Update
Older official Chinese firmware for Xiaomi 12S Ultra:
2023-02-27Fastboot (7.86 GB)
2023-03-14OTA (955.31 MB)
for 14.0.5.0.TLACNXM
2023-01-15Fastboot (7.87 GB)
2023-01-25OTA (55.54 MB)
for 14.0.3.0.TLACNXM
2022-12-28
2022-12-11Fastboot (7.87 GB)
2022-12-23
2022-10-24Fastboot (7.65 GB)
2022-12-11OTA (475.42 MB)
for 13.0.10.0.SLACNXM
2022-09-22Fastboot (7.66 GB)
2022-10-24OTA (78.54 MB)
for 13.0.9.0.SLACNXM
2022-09-07Fastboot (7.63 GB)
2022-09-22OTA (350.24 MB)
for 13.0.8.0.SLACNXM
2022-08-12
The latest MIUI update doesn’t necessarily mean it’s the best. Read the reviews on the 4PDA or XDA Developers websites before installing new software update to Xiaomi 12S Ultra thor. If you downloaded Flash File, Full ROM or the latest OTA Update and encounter problems with your device after installation, please write about it in the comments section, quoting the number of the buggy firmware.
Xiaomi releases monthly and quarterly security patch updates for Xiaomi, Redmi, and POCO for 2-3 years after market launch. Monthly and quarterly security updates include Android security patches from Google as well as Xiaomi fixes.
Miui13 rom 13.0.9.0 is soo terrible. It can’t even support google assistant hands free option and unsecure app prompt on app keep prompting for 10 seconds approval.
There’s not surprising, because MIUI 13 is a vwery raw OS.