Official Redmi K40S firmware (codename munch) includes stable versions of HyperOS and MIUI. They can be downloaded as Fastboot ROM, Recovery ROM, and OTA updates.
Phone models: 22021211RC (China). All files are original Xiaomi ROMs, freely available from miui.com. We only provide direct links to flash files and system updates.
| Model name | Redmi K40S |
|---|---|
| Release date | March 2022 |
| Support | Active |
| Current OS | HyperOS 1, Android 14 |
Latest HyperOS or MIUI firmware updates:
China HyperOS 1.0.10.0.ULMCNXM
The latest Chinese firmware version for Redmi K40S by Xiaomi:
- Version
- 1.0.10.0.ULMCNXM
- OS
- HyperOS 1
- Android
- Android 14
- Release date
- 2025-04-14
- File size
- 5.33 GB
- Official Link
- Download (.zip)
- Changelog
- Expand list
- Version
- 1.0.10.0.ULMCNXM
- OS
- HyperOS 1
- Android
- Android 14
- Release date
- 2025-04-02
- Flash file size
- 6.42 GB
- Official Link
- Download (.tgz)
- Changelog
- Expand list
Recovery ROM
Fastboot ROM
- Version
- 1.0.10.0.ULMCNXM
- File size
- 410.89 MB
- Apply for
- 1.0.8.0.ULMCNXM
- Official Link
- Download (.zip)
OTA Update
Download previous official Chinese firmware versions for Redmi K40S:
The latest HyperOS or MIUI update is not necessarily the best. Before updating Redmi K40S (munch), read reviews on 4PDA or XDA Developers. If installing a Flash File, full ROM, or the latest OTA update caused issues, please let us know in the comments and mention the version number.
