POCO F4 / Redmi K40S Firmware

Codename: munch

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Official POCO F4 / Redmi K40S firmware (codename munch). The newest Fastboot ROM is OS1.0.15.0.ULMCNXM (Android 14), 6.2 GB, released 2026-03-06 03:00. The newest Recovery ROM is OS1.0.9.0.ULMTWXM. Files are served directly from Xiaomi’s servers. Need flashing help? Browse our guides.

Xiaomi Poco F4 – official photo
  • Released2022, June 27
  • Body195g, 7.7mm thickness
  • OSAndroid 12, up to 13, MIUI 14.2 for POCO
  • Storage128GB/256GB storage, no card slot

Xiaomi Poco F4 was announced in 2022, June 23, runs Android 12, upgradable to Android 13, MIUI 14.2 for POCO, powered by Qualcomm SM8250-AC Snapdragon 870 5G (7 nm), memory: 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM, available in Moonlight Silver, Night Black, Nebula Green.

Full specifications
Network
TechnologyGSM / HSPA / LTE / 5G
Launch
Announced2022, June 23
StatusAvailable. Released 2022, June 27
Body
Dimensions163.2 x 76 x 7.7 mm (6.43 x 2.99 x 0.30 in)
Weight195 g (6.88 oz)
BuildGlass front (Gorilla Glass 5), glass back
SIMNano-SIM + Nano-SIM
Display
TypeAMOLED, 120Hz, HDR10+, Dolby Vision, 900 nits (HBM), 1300 nits (peak)
Size6.67 inches, 107.4 cm2 (~86.6% screen-to-body ratio)
Resolution1080 x 2400 pixels, 20:9 ratio (~395 ppi density)
ProtectionCorning Gorilla Glass 5
Platform
OSAndroid 12, upgradable to Android 13, MIUI 14.2 for POCO
ChipsetQualcomm SM8250-AC Snapdragon 870 5G (7 nm)
CPUOcta-core (1x3.2 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)
GPUAdreno 650
Memory
Card slotNo
Internal128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
Main Camera
Triple64 MP, f/1.8, (wide) 1/2.0", 0.7µm, PDAF, OIS 8 MP, f/2.2, 119˚ (ultrawide), 1/4.0", 1.12µm 2 MP (macro)
FeaturesLED flash, HDR, panorama
Video4K@30/60fps, 1080p@30/60fps
Selfie camera
Single20 MP, f/2.5, (wide), 1/3.06", 1.0µm
Video1080p@30fps
Sound
LoudspeakerYes, with stereo speakers
3.5mm jackNo
Comms
WLANWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Bluetooth5.2, A2DP, LE
PositioningGPS (L1+L5), GLONASS (L1), BDS (B1I+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)
NFCYes (market/region dependent)
Infrared portYes
RadioNo
USBUSB Type-C 2.0, OTG
Features
SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, compass
Battery
TypeLi-Po 4500 mAh
Charging67W wired, PD3.0, QC3, 100% in 38 min
Misc
ColorsMoonlight Silver, Night Black, Nebula Green
Models22021211RG, 22021211RI
PriceAbout 250 EUR
Our Tests
PerformanceAnTuTu: 590961 (v8), 698586 (v9) GeekBench: 3190 (v5.1) GFXBench: 49fps (ES 3.1 onscreen)
Display1003 nits max brightness (measured)
CameraPhoto / Video
Loudspeaker-26.1 LUFS (Good)
Battery (old)Endurance rating 101h

1 versions found

Version Android Type Size Released Downloads Download
OS1.0.7.0.ULMTRXM
Turkey
Android 14 Fastboot 5.9 GB 2025-04-09 03:00 0 Download

Locked, stuck or need it flashed?

Step-by-step guides for technicians working on the POCO F4 / Redmi K40S:

Remove Xiaomi FRP & factory reset Flash MediaTek (MTK) devices Fix IMEI with Dual CPID View services