Samsung Galaxy S21 Ultra official device image

Samsung Galaxy S21 Ultra

Brand samsung
Codename sm-g998b
Region AFG,AVF,ANC,ARO,CTI,UFN,PSN,XSA,OPS,TEL,VAU,DRE,MO
Official Firmware

Download Samsung Galaxy S21 Ultra Firmware

Samsung Galaxy S21 Ultra Region: AFG,AVF,ANC,ARO,CTI,UFN,PSN,XSA,OPS,TEL,VAU,DRE,MO

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Firmware Downloads

Find and download official MIUI firmware for Samsung Galaxy S21 Ultra (sm-g998b). All firmware files include MD5 hash verification and are available for direct download.

Samsung Galaxy S21 Ultra

Version Method Size Release Date MD5 Hash Download
G998BXXS9FWL9/G998BOXM9FWK2/G998BXXU9FWK2 Odin 2 B N/A
G998BXXU9EWI7/G998BOWE9EWI6/G998BXXU9EWI6 Odin 289 B N/A
G998BXXU9EWH5/G998BOXM9EWH9/G998BXXU9EWH6 Odin 254 B N/A
G998BXXS9FWL5/G998BOXM9FWK5/G998BXXU9FWK5 Odin 2 B N/A
G998BXXU9FWK5/G998BOXM9FWK5/G998BXXU9FWK5 Odin 2 B N/A
G998BXXU9EWH5/G998BOXM9EWH5/G998BXXU9EWH5 Odin 276 B N/A
G998BXXS9FWL4/G998BOXM9FWK3/G998BXXU9FWK2 Odin 2 B N/A
G998BXXU9FWK4/G998BOWO9FWL2/G998BXXU9FWK2 Odin 271 B N/A
G998BXXU9FWL3/G998BOXM9FWL3/G998BXXU9FWL3 Odin 2 B N/A
G998BXXS9EWI3/G998BOWE9EWI3/G998BXXS9EWI3 Odin 1 B N/A
G998BXXS9EWF3/G998BOXM9EWF3/G998BXXS9EWF3 Odin 1 B N/A
G998BXXS9FXA3/G998BOXM9FXA3/G998BXXU9FWK2 Odin 2 B N/A
G998BXXU9FWK3/G998BOXM9FWK3/G998BXXU9FWK2 Odin 2 B N/A
G998BXXS9FXA2/G998BOXM9FWK5/G998BXXU9FWK5 Odin 2 B N/A
G998BXXU9FWK2/G998BOXM9FWK2/G998BXXU9FWK2 Odin 2 B N/A
G998BXXS9EWI1/G998BOXM9EWH9/G998BXXU9EWH6 Odin 250 B N/A
G998BXXS9EWI1/G998BOXM9EWH5/G998BXXU9EWH5 Odin 272 B N/A
G998BXXS9EWH1/G998BOXM9EWH1/G998BXXS9EWG9 Odin 1 B N/A
G998BXXS9EWIA/G998BOXM9EWH9/G998BXXU9EWH6 Odin 243 B N/A
G998BXXS9EWJO/G998BOXM9EWH9/G998BXXS9EWJR Odin 2 B N/A
G998BXXS9EWJH/G998BOWO9EWI7/G998BXXS9EWJH Odin 241 B N/A
G998BXXS9FXAM/G998BOXM9FWK5/G998BXXU9FWK5 Odin 2 B N/A
G998BXXS9EWJG/G998BOXM9EWH5/G998BXXU9EWH5 Odin 265 B N/A
G998BXXS9EWIA/G998BOXM9EWH5/G998BXXU9EWH5 Odin 265 B N/A
G998BXXS9FXAK/G998BOXM9FWL3/G998BXXU9FWL3 Odin 2 B N/A
G998BXXS9FWLA/G998BOXM9FWL3/G998BXXU9FWL3 Odin 2 B N/A
G998BXXS9FXAH/G998BOXM9FWK2/G998BXXU9FWK2 Odin 2 B N/A
G998BXXS9FXAJ/G998BOWO9FWL2/G998BXXU9FWK2 Odin 2 B N/A
G998BXXS9FWLD/G998BOWO9FWL2/G998BXXU9FWK2 Odin 2 B N/A
G998BXXS9FWKB/G998BOXM9FWK2/G998BXXU9FWK2 Odin 2 B N/A
G998BXXS9FXBH/G998BOWO9FWL2/G998BXXS9FXBD Odin 2 B N/A
G998BXXS9FXAI/G998BOXM9FXAI/G998BXXU9FWK2 Odin 2 B N/A
G998BXXS9FXBD/G998BOXM9FXBD/G998BXXS9FXBD Odin 2 B N/A
G998BXXS9FXBE/G998BOXM9FXBE/G998BXXS9FXBE Odin 2 B N/A
G998BXXS9FXBF/G998BOXM9FXBF/G998BXXS9FXBD Odin 2 B N/A
G998BXXS9FXBG/G998BOXM9FXBG/G998BXXS9FXBG Odin 2 B N/A
G998BXXS9EWJO/G998BOXM9EWJO/G998BXXS9EWJO Odin 2 B N/A
G998BXXS9EWJQ/G998BOWE9EWJP/G998BXXS9EWJH Odin 2 B N/A
G998BXXSCGXH8/G998BOWOCGXH5/G998BXXUCGXGC Odin 413 B N/A
G998BXXU8EWF1/G998BOXM8EWF1/G998BXXU8EWF1 Odin 1 B N/A
G998BXXUBGXE7/G998BOXMBGXE7/G998BXXUBGXE7 Odin 597 B N/A
G998BXXSCGXH7/G998BOXMCGXGC/G998BXXUCGXGC Odin 533 B N/A
G998BXXU7EWE6/G998BOXM7EWE6/G998BXXU7EWE1 Odin 1 B N/A
G998BXXS7EWC4/G998BOWO7EWC4/G998BXXS7EWC4 Odin 1 B N/A
G998BXXS7EWD3/G998BOXM7EWD3/G998BXXS7EWD3 Odin 1 B N/A
G998BXXS7EWE2/G998BOWO7EWCK/G998BXXS7EWE2 Odin 491 B N/A
G998BXXU7EWE1/G998BOXM7EWE1/G998BXXU7EWE1 Odin 1 B N/A
G998BXXU7EWCH/G998BOXM7EWCH/G998BXXU7EWCH Odin 1 B N/A
G998BXXSJHZA6/G998BOXMJHZA6/G998BXXSJHZA6 Odin 287 B N/A
G998BXXSDGXI6/G998BOWEDGXI6/G998BXXSDGXI5 Odin 382 B N/A
G998BXXS6DWA6/G998BOWO6DVL6/G998BXXS6DWA5 Odin 1 B N/A
G998BXXS6DWB2/G998BOWO6DVL6/G998BXXS6DWA5 Odin 1 B N/A
G998BXXS6EWBB/G998BOXM6EWB5/G998BXXU6EWAF Odin 1 B N/A
G998BXXU6EWAF/G998BOXM6EWB5/G998BXXU6EWAF Odin 1 B N/A
G998BXXS6EWBB/G998BOXM6EWAF/G998BXXU6EWAF Odin 1 B N/A
G998BXXU6EWAF/G998BOXM6EWAF/G998BXXU6EWAF Odin 1 B N/A
G998BXXUEHYD5/G998BOXMEHYD5/G998BXXUEHYD5 Odin 357 B N/A
G998BXXSDGXI5/G998BOXMDGXI5/G998BXXSDGXI5 Odin 524 B N/A
G998BXXSCGXF5/G998BOXMCGXF5/G998BXXSCGXF5 Odin 589 B N/A
G998BXXUCGXH5/G998BOWECGXH5/G998BXXUCGXGC Odin 393 B N/A
G998BXXU5CVH7/G998BOXM5CVH7/G998BXXU5CVH7 Odin 224 B N/A
G998BXXS5DWA7/G998BOXM5DWA3/G998BXXU5DVL2 Odin 2 B N/A
G998BXXU5CVI6/G998BOWE5CVI6/G998BXXU5CVI6 Odin 2 B N/A
G998BXXS5DWA6/G998BOXM5DVKI/G998BXXU5DVL2 Odin 2 B N/A
G998BXXS5DWA4/G998BOXM5DVKF/G998BXXU5DVL2 Odin 2 B N/A
G998BXXU5DWA3/G998BOXM5DWA3/G998BXXU5DVL2 Odin 2 B N/A
G998BXXU5DVK3/G998BOXM5DVK3/G998BXXU5DVJA Odin 2 B N/A
G998BXXS5DVL3/G998BOXM5DVKF/G998BXXU5DVL2 Odin 2 B N/A
G998BXXU5DVL2/G998BOWO5DVL5/G998BXXU5DVL1 Odin 1 B N/A
G998BXXU5CVF2/G998BOXM5CVF2/G998BXXU5CVF3 Odin 684 B N/A
G998BXXS5DVK1/G998BOXM5DVJC/G998BXXU5DVJA Odin 2 B N/A
G998BXXS5CVIF/G998BOXM5CVH7/G998BXXU5CVH7 Odin 2 B N/A
G998BXXS5CVHI/G998BOXM5CVH7/G998BXXU5CVH7 Odin 225 B N/A
G998BXXU5CVGC/G998BOWO5CVG7/G998BXXU5CVG3 Odin 778 B N/A
G998BXXS5DVKE/G998BOXM5DVK3/G998BXXU5DVJA Odin 2 B N/A
G998BXXU5CVGB/G998BOXM5CVGB/G998BXXU5CVG3 Odin 610 B N/A
G998BXXS5CVFB/G998BOXM5CVFB/G998BXXU5CVF3 Odin 681 B N/A
G998BXXU5DVKF/G998BOXM5DVKF/G998BXXU5DVL2 Odin 2 B N/A
G998BXXU5DVKI/G998BOXM5DVKI/G998BXXU5DVL2 Odin 2 B N/A
G998BXXU5DVJC/G998BOXM5DVJC/G998BXXU5DVJA Odin 2 B N/A
G998BXXS5CVEA/G998BOWO5CVDD/G998BXXU5CVDD Odin 1 B N/A
G998BXXU5CVDD/G998BOXM5CVDD/G998BXXU5CVDD Odin 1 B N/A
G998BXXSCGXF4/G998BOXMCGXF6/G998BXXSCGXF4 Odin 592 B N/A
G998BXXSBGXE4/G998BOWEBGXE4/G998BXXSBGXDH Odin 551 B N/A
G998BXXS4BVA8/G998BOXM4BULI/G998BXXU4BULG Odin 2 B N/A
G998BXXU4CVC4/G998BOXM4CVC4/G998BXXU4CVC2 Odin 1 B N/A
G998BXXU4CVD2/G998BOXM4CVD2/G998BXXU4CVC2 Odin 1 B N/A
G998BXXU4BVB1/G998BOXM4BVB1/G998BXXU4BVB1 Odin 2 B N/A
G998BXXS4CVCG/G998BOWO4CVB9/G998BXXU4CVC2 Odin 1 B N/A
G998BXXS4BVAA/G998BOWO4BULG/G998BXXU4BULG Odin 1 B N/A
G998BXXU4BULF/G998BOXM4BULI/G998BXXU4BULG Odin 2 B N/A
G998BXXU3BUK8/G998BOXM3BUK8/G998BXXU3BUK8 Odin 2 B N/A
G998BXXS3AUJ7/G998BOXM3AUIE/G998BXXU3AUIF Odin 2 B N/A
G998BXXU3AUF6/G998BOXM3AUF6/G998BXXU3AUF9 Odin 1 B N/A
G998BXXS3BUL6/G998BOXM3BUKG/G998BXXU3BUKG Odin 2 B N/A
G998BXXU3AUG4/G998BOXM3AUG4/G998BXXU3AUG4 Odin 1015 B N/A
G998BXXU3AUE1/G998BOXM3AUE1/G998BXXU3AUE1 Odin 1 B N/A
G998BXXS3BUL1/G998BOXM3BUKG/G998BXXU3BUKG Odin 2 B N/A
G998BXXS3AUFD/G998BOXM3AUF6/G998BXXU3AUF9 Odin 1 B N/A
G998BXXS3BULC/G998BOXM3BUKG/G998BXXU3BUKG Odin 2 B N/A
G998BXXU3BUKA/G998BOXM3BUKA/G998BXXU3BUKB Odin 2 B N/A
G998BXXU3BUKG/G998BOXM3BUKG/G998BXXU3BUKG Odin 2 B N/A
G998BXXU3AUIE/G998BOXM3AUIE/G998BXXU3AUIF Odin 222 B N/A
G998BXXS3AUHD/G998BOXM3AUHB/G998BXXU3AUHB Odin 290 B N/A
G998BXXU3AUHB/G998BOXM3AUHB/G998BXXU3AUHB Odin 290 B N/A
G998BXXU3AUGM/G998BOXM3AUGM/G998BXXU3AUGM Odin 992 B N/A
G998BXXSJHZC2/G998BOXMJHZC2/G998BXXSJHZA6 Odin 658 B N/A
G998BXXSEGYA2/G998BOXMEGXL2/G998BXXSEGXL2 Odin 3 B N/A
G998BXXSEGXL2/G998BOXMEGXL2/G998BXXSEGXL2 Odin 260 B N/A
G998BXXU2AUC8/G998BOXM2AUC8/G998BXXU2AUC8 Odin 1 B N/A
G998BXXS2AUBB/G998BOXM2AUBB/G998BXXU2AUBB Odin 2 B N/A
G998BXXSIHYK1/G998BOXMIHYK1/G998BXXSIHYK1 Odin 302 B N/A
G998BXXSHHYJ1/G998BOXMHHYJ1/G998BXXSHHYJ1 Odin 309 B N/A
G998BXXSGHYH1/G998BOXMGHYH1/G998BXXSGHYH1 Odin 323 B N/A
G998BXXSFHYE1/G998BOXMFHYE1/G998BXXSFHYE1 Odin 339 B N/A
G998BXXSEGXK1/G998BOXMEGXJE/G998BXXUEGXJE Odin 297 B N/A
G998BXXU1AUB9/G998BOXM1AUB9/G998BXXU1AUB8 Odin 2 B N/A
G998BXXU1AUB6/G998BOXM1AUB6/G998BXXU1AUB6 Odin 2 B N/A
G998BXXU1AUA4/G998BOXM1AUA4/G998BXXU1AUA4 Odin 2 B N/A
G998BXXU1AUB3/G998BOXM1AUB3/G998BXXU1AUB3 Odin 2 B N/A
G998BXXU1AUAC/G998BOXM1AUAC/G998BXXU1AUAC Odin 2 B N/A
G998BXXU1ATLF/G998BOXM1ATLF/G998BXXU1ATLF Odin 2 B N/A
G998BXXSAFXCQ/G998BOWOAFWL2/G998BXXSAFXCL Odin 2 B N/A
G998BXXUEGXJE/G998BOXMEGXJE/G998BXXUEGXJE Odin 305 B N/A
G998BXXUCGXGC/G998BOXMCGXGC/G998BXXUCGXGC Odin 538 B N/A
G998BXXSBGXEC/G998BOXMBGXEE/G998BXXSBGXEC Odin 594 B N/A
G998BXXSBGXED/G998BOXMBGXED/G998BXXSBGXED Odin 593 B N/A
G998BXXSBGXDH/G998BOXMBGXDG/G998BXXSBGXDH Odin 601 B N/A
G998BXXSBGXDH/G998BOXMBGXDH/G998BXXSBGXDH Odin 601 B N/A
G998BXXUAGXDA/G998BOXMAGXDA/G998BXXUAGXDA Odin 602 B N/A
G998BXXUAGXDA/G998BOXMAGXDC/G998BXXUAGXDA Odin 602 B N/A
G998BXXSAFXCL/G998BOXMAFXCL/G998BXXSAFXCL Odin 2 B N/A
G998BXXSAFXCM/G998BOXMAFXCM/G998BXXSAFXCM Odin 2 B N/A
G998BXXSAFXCO/G998BOXMAFXCO/G998BXXSAFXCO Odin 2 B N/A
G998BXXSAFXCP/G998BOXMAFXCP/G998BXXSAFXCL Odin 2 B N/A

Device Specifications

Versions: SM-G998B, SM-G998B/DS (International); SM-G998U (USA); SM-G998U1 (USA unlocked); SM-G998W (Canada); SM-G998N (Korea); SM-G9980 (China)

NetworkTechnologyGSM / CDMA / HSPA / EVDO / LTE / 5G
2G bandsGSM 850 / 900 / 1800 / 1900
 CDMA 800 / 1900 & TD-SCDMA
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
 CDMA2000 1xEV-DO
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G998U1
 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - SM-G998B
5G bands2, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G998U1
 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 - SM-G998B
SpeedHSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)
LaunchAnnounced2021, January 14
StatusAvailable. Released 2021, January 29
BodyDimensions165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 in)
Weight227 g (Sub6), 229 g (mmWave) (8.01 oz)
BuildGlass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame
SIM· Nano-SIM + eSIM
· Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
 IP68 dust tight and water resistant (immersible up to 1.5m for 30 min)
Stylus support
DisplayTypeDynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak)
Size6.8 inches, 112.1 cm2 (~89.8% screen-to-body ratio)
Resolution1440 x 3200 pixels, 20:9 ratio (~515 ppi density)
ProtectionCorning Gorilla Glass Victus
PlatformOSAndroid 11, up to 4 major Android upgrades, One UI 7
ChipsetExynos 2100 (5 nm) - International
Qualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China
CPUOcta-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International
Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China
GPUMali-G78 MP14 - International
Adreno 660 - USA/China
MemoryCard slotNo
Internal128GB 8GB RAM, 128GB 12GB RAM, 256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM
 UFS 3.1
Main CameraQuad108 MP, f/1.8, 24mm (wide), 1/1.33", 0.8µm, PDAF, OIS
10 MP, f/2.4, 72mm (telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 3x optical zoom
10 MP, f/4.9, 240mm (periscope telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 10x optical zoom
12 MP, f/2.2, 13mm (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video
FeaturesLaser AF, LED flash, auto-HDR, panorama
Video8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS
Selfie cameraSingle40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF
FeaturesHDR
Video4K@30/60fps, 1080p@30fps
SoundLoudspeaker Yes, with stereo speakers
3.5mm jack No
 High-bitrate audio support
CommsWLANWi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct
Bluetooth5.2, A2DP, LE
PositioningGPS, GLONASS, BDS, GALILEO
NFCYes
RadioFM radio (Snapdragon model only; market/operator dependent)
USBUSB Type-C 3.2, OTG
FeaturesSensorsFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
 Samsung DeX, Samsung Wireless DeX (desktop experience support)
Ultra Wideband (UWB) support
BatteryTypeLi-Ion 5000 mAh
Charging25W wired, PD3.0
15W wireless (Qi)
4.5W reverse wireless
MiscColorsPhantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown, Navy
ModelsSM-G998B, SM-G998B/DS, SM-G998U, SM-G998U1, SM-G998W, SM-G998N, SM-G9980
SAR0.77 W/kg (head)     1.02 W/kg (body)    
SAR EU0.71 W/kg (head)     1.58 W/kg (body)    
Price$ 244.44 / € 235.72 / £ 212.99
Our TestsPerformance AnTuTu: 657150 (v8)
GeekBench: 3518 (v5.1)
GFXBench: 33fps (ES 3.1 onscreen)
Display 1023 nits max brightness (measured)
Camera Photo / Video
Loudspeaker -25.5 LUFS (Very good)
Battery (old)
Endurance rating 114h
Data source: GSMArena

More samsung Devices

How to Flash Firmware

Steps to Install Firmware:

  1. Download the ROM: Choose the appropriate firmware version above for your device region
  2. Backup Your Data: All data will be erased during flashing
  3. Unlock Bootloader: Required for some devices (check device-specific requirements)
  4. Download Tools: Download MIUI Flash Tool or use ADB/Fastboot
  5. Flash the ROM: Follow the tool's instructions to flash the downloaded firmware
  6. Verify: Restart and verify successful installation

⚠️ Warning: Flashing custom ROMs may void your warranty. Proceed at your own risk.

Frequently Asked Questions

Q: Is it safe to flash official firmware?

A: Yes, flashing official firmware is generally safe and won't void your warranty if done through official methods.

Q: What's the difference between Recovery and Fastboot ROMs?

A: Recovery ROMs are flashed from recovery mode, while Fastboot ROMs require bootloader unlock and ADB tools.

Q: Can I downgrade to an older firmware version?

A: Some devices allow downgrading, but it depends on the device and region. Check device-specific forums first.

Q: What if flashing fails?

A: If flashing fails, try using the official tool, ensure USB drivers are installed, and check device compatibility.