Official REDMI K40S firmware (codename munch) includes the latest stable HyperOS 1 update with Android 14 and all original previous versions, in Fastboot ROM flash file, Recovery ROM, and OTA formats.
Phone models: 22021211RC (China). All files are stock Xiaomi ROMs, downloaded directly from Xiaomi servers. We provide direct download links to official firmware, system and software updates.
Latest firmware updates:
- 53 ChinaHyperOS 1.0.15.0.ULMCNXM
- Release›MIUI 13 Android 12
- Nov 2022››MIUI 13 Android 13
- Jan 2023›››MIUI 14 Android 13
- Mar 2024››››HyperOS 1 Android 14
China HyperOS 1.0.15.0.ULMCNXM
The latest Chinese HyperOS version for REDMI K40S:
China Recovery ROM
- Version
- 1.0.15.0.ULMCNXM
- OS
- HyperOS 1
- Android
- Android 14
- Release date
- 2026-03-27
- File size
- 5.33 GB
- Official link
- Download (.zip)
- Changelog
- Expand list
China Fastboot ROM (flash file)
- Version
- 1.0.15.0.ULMCNXM
- OS
- HyperOS 1
- Android
- Android 14
- Release date
- 2026-03-06
- Flash file size
- 6.24 GB
- Official link
- Download (.tgz)
- Changelog
- Expand list
OTA Update
- Version
- 1.0.15.0.ULMCNXM
- File size
- 13.81 MB
- Apply for
- 1.0.12.0.ULMCNXM
- Official link
- Download (.zip)
Download previous Chinese firmware updates for REDMI K40S:
REDMI K40S has reached EOL (end-of-life) status in Xiaomi's official catalog: support has ended, new firmware and security patches are no longer released, and the device will not receive HyperOS 2.
The new HyperOS 1 update is not necessarily the best. Before updating REDMI K40S (munch), read reviews on XDA Developers or the Mi Community forum. If installing full ROM or the new OTA update caused issues, please let us know in the comments and mention the firmware region and version number.
