Redmi K40S firmware (codename munch) below are the stock stable HyperOS and MIUI, which can be downloaded as Fastboot ROM, Recovery ROM and OTA Update.
Phone model name corresponds to 22021211RC (China). Xiaomi ROM are downloaded free of charge from the official website miui.com. We only collect and publish links to stock flash files and original updates.
| Model | Redmi K40S |
|---|---|
| Release date | March 2022 |
| Support | Active |
| Current OS | HyperOS 1, Android 14 |
Download the latest HyperOS and MIUI version and new updates:
China HyperOS 1.0.10.0.ULMCNXM
Latest version of the stable Chinese firmware 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
Older official Chinese firmware for Redmi K40S:
2025-01-06Fastboot (6.42 GB)
2024-12-16OTA (321.37 MB)
for 1.0.5.0.ULMCNXM
2024-09-18Fastboot (6.41 GB)
2024-09-03OTA (35.20 MB)
for 1.0.4.0.ULMCNXM
2024-08-19Fastboot (6.41 GB)
2024-08-05OTA (316.43 MB)
for 1.0.3.0.ULMCNXM
2024-07-29Fastboot (6.41 GB)
2024-07-15OTA (26.15 MB)
for 1.0.2.0.ULMCNXM
The latest HyperOS or 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 Redmi K40S munch. 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.
