Xiaomi 12S Ultra V14.0.22.12.5.DEV China Fastboot ROM & Recovery ROM [Download]

On this page, you can download MIUI 14 (V14.0.22.12.5.DEV) flash file for Xiaomi 12S Ultra (China) based on Android 13 version.

Xiaomi 12S Ultra MIUI V14.0.22.12.5.DEV Recovery ROM & Fastboot ROM

The Xiaomi 12S Ultra (Codenamed: thor) MIUI V14.0.22.12.5.DEV for China is available as:

Full Recovery ROM – Full ROM package for installs via Recovery.
Full Fastboot ROM – Full ROM package for clean installs.

Follow the detailed tutorial on how to install MIUI V14.0.22.12.5.DEV on Xiaomi 12S Ultra (China) from here – Fastboot ROM | Recovery ROM.

Disclaimer
Flashing is a tedious process and should be carried out carefully; otherwise, it may permanently damage your device. XiaomiAdvices.com or Xiaomi is not responsible for any damage that may be caused to your device while flashing. Proceed at your own risk.

Xiaomi 12S Ultra MIUI V14.0.22.12.5.DEV China Public Beta Recovery ROM

RECOVERY ROM
File Name	miui_THOR_V14.0.22.12.5.DEV_22c8a9149e_13.0.zip
Device	Xiaomi 12S Ultra
Codename	thor
MIUI Version	V14.0.22.12.5.DEV
Android	13.0
Branch	Public Beta
Region	China
Type	Full
Size	6.1 GB
Date	2022-12-11
MD5	22c8a9149e33a60ed4617375539afef6

Changelog

Xiaomi 12S Ultra V14.0.22.12.5.DEV Public Beta Recovery ROM – Changelog

[MIUI 14]
Ready. Steady. Live.
[Highlights]
MIUI uses less memory now and keeps being swift and responsive over much more extended periods.
Improved system architecture comprehensively boosts the performance of both pre-installed and third-party apps while saving power.
Attention to detail redefines personalization and brings it to a new level.
More than 30 scenes now support end-to-end privacy with no data stored in the cloud and all actions performed locally on the device.
Mi Smart Hub gets a significant revamp, works much faster, and supports more devices.
Family services allow sharing all the essential things with the people you care about most.
[Basic experience]
Improved system architecture comprehensively boosts the performance of both pre-installed and third-party apps while saving power.
MIUI uses less memory now and keeps being swift and responsive over much more extended periods.
Stabilized framing makes gaming more seamless than ever before.
[Personalization]
New widget formats allow more combinations, making your experience even more convenient.
Want a plant or pet to always wait for you on your Home screen? MIUI has lots of them to offer now!
Attention to detail redefines personalization and brings it to a new level.
Super icons will give your Home screen a new look. (Update Home screen and Themes to the latest version to be able to use Super icons.)
Home screen folders will highlight the apps you need most making them just one tap away from you.
[Privacy protection]
You can press and hold the text on a Gallery image to instantly recognize it now. 8 languages are supported.
Live subtitles use on-device speech-to-text capabilities to transcribe meetings and live streams as they are happening.
More than 30 scenes now support end-to-end privacy with no data stored in the cloud and all actions performed locally on the device.
[Interconnectivity]
Mi Smart Hub gets a significant revamp, works much faster, and supports more devices.
Bandwidth allocated to interconnectivity makes discovering, connecting, and transferring items much faster.
You can easily connect earphones to your phone, tablet, and TV, and switch between these devices seamlessly.
Whenever text input is required on your TV, you can get a convenient pop-up on your phone and enter text there.
Incoming phone calls can be easily transferred to your tablet.
[Family services]
Family services allow sharing all the essential things with the people you care about most.
Family services allow creating of groups with up to 8 members and offer various roles with different permissions.
You can share photo albums with your family group now. Everyone in the group will be able to view and upload new items.
Set your shared album as a screensaver on your TV and let all your family members enjoy these joyful memories together!
Family services allow sharing of health data (e.g. heart rate, blood oxygen, and sleep) with family members.
Child accounts offer a series of sophisticated measures of parental controls, from limiting screen time and restricting app usage to setting a secure area.
[Mi AI voice assistant]
Mi AI is no longer just a voice assistant. You can use it as a scanner, translator, call assistant, and more.
Mi AI allows you to perform complicated daily tasks by using simple voice commands. Communicating with your device could never be easier.
With Mi AI, you can scan and recognize anything – be it an unfamiliar plant or an important document.
Mi AI is ready to help whenever you bump into a language barrier. Smart translation tools support multiple languages.
Dealing with calls is so convenient with Mi AI: it can filter spam calls or easily take care of the calls for you.
[More features and improvements]
Search in Settings is now more advanced. With search history and categories in results, everything looks much crisper now.
Your device can work with much more types of wireless card readers. You can open supported cars or swipe student IDs with your phone now.
Whenever you sign out of your account, you can choose to keep all your cards on the device without having to add them again next time.
You can boost connection speed using mobile data when the Wi-Fi signal is too weak.

Xiaomi 12S Ultra MIUI V14.0.22.12.5.DEV China Public Beta Fastboot ROM

FASTBOOT ROM
File Name	thor_images_V14.0.22.12.5.DEV_20221205.0000.00_13.0_cn_chinatelecom_0457ff82b1.tgz
Device	Xiaomi 12S Ultra
Codename	thor
MIUI Version	V14.0.22.12.5.DEV
Android	13.0
Branch	Public Beta
Region	China
Type	Full
Size	7.9 GB
Date	2022-12-05
MD5	0457ff82b1a6fe0954fc4fcec9ffe182

Changelog

How to Flash MIUI V14.0.22.12.5.DEV Fastboot ROM on Xiaomi 12S Ultra (China)

Download and extract the Xiaomi 12S Ultra MIUI V14.0.22.12.5.DEV Fastboot ROM on your computer. Make sure to check if the ROM file suffix is “.tgz“. If it is “.gz“, please rename it to “.tgz“.
Download and extract Xiaomi Flash Tool on your computer.

Make sure your Xiaomi 12S Ultra’s bootloader is unlocked.
Power off and boot Xiaomi 12S Ultra (China) into Fastboot Mode by pressing the Volume Down and Power buttons together until you see the Fastboot logo.
Connect your device to computer using USB Cable.
Run XiaoMiFlash.exe and select the MIUI V14.0.22.12.5.DEV Fastboot ROM folder.

Click on refresh to detect your device and click on flash to start the flashing process.

Follow the detailed guide on how to flash MIUI V14.0.22.12.5.DEV Fastboot ROM on Xiaomi, Redmi and POCO devices here.

How to Install MIUI V14.0.22.12.5.DEV Recovery ROM on Xiaomi 12S Ultra (thor) via Stock Recovery

We can update the Xiaomi 12S Ultra (China) firmware via recovery without using computer. However, the Recovery ROM MIUI version must be higher than your current installed version, as downgrading firmware is blocked by Xiaomi.

While user data is retained when flashing via stock recovery, it’s recommended to backup your Xiaomi 12S Ultra (China) data before installing, in case of accidental data loss.

Follow the steps to install MIUI V14.0.22.12.5.DEV Recovery ROM on Xiaomi 12S Ultra using stock recovery:

Download the Xiaomi 12S Ultra MIUI V14.0.22.12.5.DEV Recovery ROM zip for China region.
Rename the zip file to “update.zip” if the name differs.
Transfer the update.zip to the root of your phone’s internal storage.

Press and hold the Volume Up and Power buttons together to boot into recovery mode. For some devices you’ll have to press Volume Up, Volume Down and Power buttons to boot into recovery mode.
The update will automatically start flashing if the correct ROM zip is detected.
Once firmware installation completes, your phone will reboot into the updated MIUI V14.0.22.12.5.DEV version. User data and apps are retained after the process.

For older Xiaomi phones, you may need to manually select “Install update.zip to System One” from the Recovery menu. After install, exit Recovery and boot into MIUI.

Install MIUI Recovery ROM on Xiaomi 12S Ultra via Software Updater using PC

You can install MIUI V14.0.22.12.5.DEV firmware updates on your Xiaomi 12S Ultra device using a Windows PC, without needing to unlock the bootloader. This method suits for the situations like: Updating Global Stable ROM from Global Stable ROM, Updating Global Beta ROM from Global Beta ROM, Updating to Global Beta ROM from Global Stable ROM and vice versa.

Follow these steps to flash Recovery ROM on Xiaomi 12S Ultra (China) using a PC:

Download the latest Xiaomi 12S Ultra (China) MIUI V14.0.22.12.5.DEV Recovery ROM zip.

Connect your phone to the PC using a USB cable.
Copy the downloaded ROM zip file to the internal storage on your device, in the “downloaded_rom” folder. If the folder doesn’t exists create it before copying the ROM file.
On the phone, open Settings and go to About Phone → System Update.
Tap the 3-dot menu (⋮) in the top right and select “Select update package” or “Choose update package“.

Choose the Recovery ROM zip file you copied to the phone’s storage.
Once you select the ROM file, the update process will start automatically and install the new MIUI firmware version.