Samsung Galaxy S21 FE (SM-G990B) is a samsung device (codename: sm-g990b). FirmwareMirror hosts 66 verified firmware builds, covering: 3IE, CAU. Available as official firmware. Last updated: February 2026. All files MD5-verified. Free, no registration.
Find and download official Stock ROM for Samsung Galaxy S21 FE (SM-G990B) (sm-g990b). All firmware files include MD5 hash verification and are available for direct download.
| Version | Method | Size | Release Date | MD5 Hash | Download |
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| G990BXXSCGYC9/G990BOXMCGYC9/G990BXXSCGYC1 | Odin | 3.24 GB | 2025-03-01 |
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| G990BXXS9GXF3/G990BOXM9GXF3/G990BXXS9GXF3 | Odin | 1.06 GB | 2024-06-01 |
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| G990BXXU9GXH2/G990BOXM9GXH2/G990BXXU9GXG3 | Odin | 449.28 MB | 2024-08-01 |
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| G990BXXS9GXI1/G990BOXM9GXI1/G990BXXU9GXG3 | Odin | 441.58 MB | 2024-09-01 |
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| G990BXXS8GXF1/G990BOXM8GXF1/G990BXXS8GXF1 | Odin | 1.06 GB | 2024-06-01 |
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| G990BXXU8GXE1/G990BOXM8GXE1/G990BXXU8GXE1 | Odin | 1.07 GB | 2024-05-01 |
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| G990BXXUBGXK7/G990BOXMBGXK7/G990BXXUBGXK7 | Odin | 361.74 MB | 2024-11-01 |
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| G990BXXU7GXD6/G990BOXM7GXD6/G990BXXU7GXD4 | Odin | 1.07 GB | 2024-04-01 |
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| G990BXXS7FXD3/G990BOXM7FXD3/G990BXXS7FXD2 | Odin | 2.31 GB | 2024-04-01 |
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| G990BXXS7FXD2/G990BOXM7FXD2/G990BXXS7FXD2 | Odin | 2.31 GB | 2024-04-01 |
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| G990BXXS6EWG9/G990BOXM6EWG9/G990BXXS6EWG9 | Odin | 1.36 GB | 2023-07-01 |
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| G990BXXS6FXA8/G990BOXM6FXA8/G990BXXS6FXA8 | Odin | 2.31 GB | 2024-01-01 |
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| G990BXXS6FXA7/G990BOXM6FXA7/G990BXXS6FXA7 | Odin | 2.32 GB | 2024-01-01 |
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| G990BXXS6FWL5/G990BOXM6FWL5/G990BXXS6FWL5 | Odin | 2.32 GB | 2023-12-01 |
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| G990BXXU6EWH5/G990BOXM6EWHB/G990BXXU6EWHB | Odin | 303.42 MB | 2023-08-01 |
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| G990BXXU6FWK3/G990BOXM6FWK5/G990BXXU6FWK3 | Odin | 2.32 GB | 2023-11-01 |
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| G990BXXS6FWL3/G990BOXM6FWL3/G990BXXU6FWK3 | Odin | 2.32 GB | 2023-12-01 |
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| G990BXXS6FWL2/G990BOXM6FWL2/G990BXXU6FWK3 | Odin | 2.32 GB | 2023-12-01 |
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| G990BXXS6FXC2/G990BOXM6FXC2/G990BXXS6FXC2 | Odin | 2.32 GB | 2024-03-01 |
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| G990BXXS6EWF2/G990BOXM6EWF2/G990BXXS6EWF2 | Odin | 1.36 GB | 2023-06-01 |
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| G990BXXU6FWL1/G990BOXM6FWL1/G990BXXU6FWK3 | Odin | 2.32 GB | 2023-12-01 |
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| G990BXXS6FXC1/G990BOXM6FXC1/G990BXXS6FXC1 | Odin | 2.32 GB | 2024-03-01 |
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| G990BXXS6FXA1/G990BOXM6FXA1/G990BXXS6FXA1 | Odin | 2.32 GB | 2024-01-01 |
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| G990BXXS6EWJ1/G990BOXM6EWHB/G990BXXU6EWHB | Odin | 293.38 MB | 2023-10-01 |
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| G990BXXS6EWI1/G990BOXM6EWHB/G990BXXU6EWHB | Odin | 297.47 MB | 2023-09-01 |
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| G990BXXS6EWJB/G990BOXM6EWHB/G990BXXS6EWJB | Odin | 2.42 GB | 2023-10-01 |
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| G990BXXU5EWE7/G990BOXM5EWE7/G990BXXU5EWE7 | Odin | 1.38 GB | 2023-05-01 |
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| G990BXXU4EWC7/G990BOXM4EWC7/G990BXXU4EWC7 | Odin | 1.39 GB | 2023-03-01 |
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| G990BXXS4EWE3/G990BOXM4EWE3/G990BXXS4EWE3 | Odin | 1.39 GB | 2023-05-01 |
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| G990BXXU4EWD2/G990BOXM4EWD2/G990BXXU4EWD2 | Odin | 1.39 GB | 2023-04-01 |
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| G990BXXSBGXJ3/G990BOXMBGXJ3/G990BXXSBGXJ3 | Odin | 420.06 MB | 2024-10-01 |
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| G990BXXS3EWC4/G990BOXM3EWC4/G990BXXS3EWC4 | Odin | 1.71 GB | 2023-03-01 |
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| G990BXXU3EWC1/G990BOXM3EWC1/G990BXXU3EWC1 | Odin | 1.71 GB | 2023-03-01 |
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| G990BXXSBGYA2/G990BOXMBGYA2/G990BXXUBGXK7 | Odin | 338.73 MB | 2025-01-01 |
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| G990BXXSBGXL2/G990BOXMBGXL2/G990BXXUBGXK7 | Odin | 356.04 MB | 2024-12-01 |
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| G990BXXSDHYE2/G990BOXMDHYE2/G990BXXSDHYE2 | Odin | 363.93 MB | 2025-05-01 |
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| G990BXXSJIZB2/G990BOXMJIZB2/G990BXXSJIZB1 | Odin | 1.15 GB | 2026-02-01 |
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| G990BXXSHIYK2/G990BOXMHIYK2/G990BXXSHIYK1 | Odin | 333.3 MB | 2025-11-01 |
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| G990BXXSGIYJ2/G990BOXMGIYJ2/G990BXXUGIYJ1 | Odin | 371.54 MB | 2025-10-01 |
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| G990BXXU2CVD9/G990BOXM2CVD9/G990BXXU2CVD9 | Odin | 1.13 GB | 2022-04-01 |
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| G990BXXU2CVH7/G990BOXM2CVH7/G990BXXU2CVH7 | Odin | 285.7 MB | 2022-08-01 |
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| G990BXXU2CVG7/G990BOXM2CVG7/G990BXXU2CVG7 | Odin | 636.49 MB | 2022-07-01 |
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| G990BXXU2CVF6/G990BOXM2CVF6/G990BXXU2CVF6 | Odin | 662.19 MB | 2022-06-01 |
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| G990BXXS2CVC6/G990BOXM2CVC6/G990BXXS2CVC6 | Odin | 1.34 GB | 2022-03-01 |
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| G990BXXS2CVI5/G990BOXM2CVI5/G990BXXS2CVI5 | Odin | 2.33 GB | 2022-09-01 |
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| G990BXXU2DWA4/G990BOXM2DWA4/G990BXXU2DWA4 | Odin | 2.22 GB | 2023-01-01 |
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| G990BXXS2DVK4/G990BOXM2DVK4/G990BXXS2DVK4 | Odin | 2.22 GB | 2022-11-01 |
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| G990BXXU2DVK3/G990BOXM2DVK3/G990BXXU2DVK3 | Odin | 2.22 GB | 2022-11-01 |
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| G990BXXS2DVL1/G990BOXM2DVL1/G990BXXS2DVL1 | Odin | 2.22 GB | 2022-12-01 |
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| G990BXXU2CVF1/G990BOXM2CVF1/G990BXXU2CVF1 | Odin | 698.3 MB | 2022-06-01 |
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| G990BXXU2EWAJ/G990BOXM2EWAJ/G990BXXU2EWAJ | Odin | 1.71 GB | 2023-01-01 |
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| G990BXXSBGYB1/G990BOXMBGYB1/G990BXXUBGXK7 | Odin | 332.56 MB | 2025-02-01 |
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| G990BXXSIIZA1/G990BOXMIIZA1/G990BXXSIIZA1 | Odin | 323.48 MB | 2026-01-01 |
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| G990BXXSHIYK1/G990BOXMHIYK1/G990BXXSHIYK1 | Odin | 373.11 MB | 2025-11-01 |
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| G990BXXUGIYJ1/G990BOXMGIYJ1/G990BXXUGIYJ1 | Odin | 377.62 MB | 2025-10-01 |
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| G990BXXSGHYI1/G990BOXMGHYI1/G990BXXSGHYI1 | Odin | 2.21 GB | 2025-09-01 |
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| G990BXXSFHYH1/G990BOXMFHYH1/G990BXXSFHYG1 | Odin | 336.57 MB | 2025-08-01 |
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| G990BXXSFHYG1/G990BOXMFHYG1/G990BXXSFHYG1 | Odin | 348.47 MB | 2025-07-01 |
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| G990BXXSEHYF1/G990BOXMEHYF1/G990BXXSEHYF1 | Odin | 356.97 MB | 2025-06-01 |
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| G990BXXSCGYC1/G990BOXMCGYC1/G990BXXSCGYC1 | Odin | 288.75 MB | 2025-03-01 |
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| G990BXXSAGXJ1/G990BOXMAGXJ1/G990BXXSAGXJ1 | Odin | 435.12 MB | 2024-10-01 |
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| G990BXXU1BUL5/G990BOXM1BUL5/G990BXXU1BUL5 | Odin | 1.99 GB | 2021-12-01 |
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| G990BXXU1BUK5/G990BOXM1BUK5/G990BXXU1BUK5 | Odin | 3.87 GB | 2021-11-01 |
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| G990BXXU1CVC3/G990BOXM1CVC3/G990BXXU1CVC3 | Odin | 1.34 GB | 2022-03-01 |
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| G990BXXS1BVB3/G990BOXM1BVB3/G990BXXS1BVB3 | Odin | 2 GB | 2022-02-01 |
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| G990BXXUCHYDB/G990BOXMCHYDB/G990BXXUCHYDB | Odin | 381.98 MB | 2025-04-01 |
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| Network | Technology | GSM / CDMA / HSPA / EVDO / LTE / 5G |
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | |
| CDMA 800 / 1900 & TD-SCDMA | ||
| 3G bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | |
| CDMA2000 1xEV-DO | ||
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 12, 17, 20, 26, 28, 32, 38, 40, 41, 66 - International | |
| 1, 2, 3, 4, 5, 7, 12, 13, 29, 25, 26, 28, 38, 39, 40, 41, 46, 48, 66, 71 - USA | ||
| 5G bands | 1, 3, 5, 8, 20, 28, 38, 40, 41, 66, 78 SA/NSA/Sub6 - International | |
| 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - USA | ||
| Speed | HSPA 42.2/5.76 Mbps, LTE (5CA) Cat19 1600/200 Mbps, 5G |
| Launch | Announced | 2022, January 04 |
|---|---|---|
| Status | Available. Released 2022, January 07 |
| Body | Dimensions | 155.7 x 74.5 x 7.9 mm (6.13 x 2.93 x 0.31 in) |
|---|---|---|
| Weight | 177 g (6.24 oz) | |
| Build | Glass front (Gorilla Glass Victus), plastic back, aluminum frame | |
| SIM | · Nano-SIM · Nano-SIM + Nano-SIM | |
| IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) |
| Display | Type | Dynamic AMOLED 2X, 120Hz, HDR10+ |
|---|---|---|
| Size | 6.4 inches, 100.5 cm2 (~86.7% screen-to-body ratio) | |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density) | |
| Protection | Corning Gorilla Glass Victus |
| Platform | OS | Android 12, up to 4 major Android upgrades, One UI 8 |
|---|---|---|
| Chipset | Qualcomm SM8350 Snapdragon 888 5G (5 nm) - Version 1 Exynos 2100 (5 nm) - Version 2 | |
| CPU | Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - Version 1 Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - Version 2 | |
| GPU | Adreno 660 - Version 1 Mali-G78 MP14 - Version 2 |
| Memory | Card slot | No |
|---|---|---|
| Internal | 128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM, 256GB 8GB RAM | |
| UFS 3.1 |
| Main Camera | Triple | 12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, dual pixel PDAF, OIS 8 MP, f/2.4, 76mm (telephoto), 1/4.5", 1.0µm, PDAF, OIS, 3x optical zoom 12 MP, f/2.2, 13mm, 123˚ (ultrawide), 1/3.0", 1.12µm |
|---|---|---|
| Features | LED flash, auto-HDR, panorama | |
| Video | 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, gyro-EIS |
| Selfie camera | Single | 32 MP, f/2.2, 26mm (wide), 1/2.74", 0.8µm |
|---|---|---|
| Features | HDR | |
| Video | 4K@30/60fps, 1080p@30/60fps, gyro-EIS |
| Sound | Loudspeaker | Yes, with stereo speakers |
|---|---|---|
| 3.5mm jack | No | |
| 32-bit/384kHz audio |
| Comms | WLAN | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct |
|---|---|---|
| Bluetooth | 5.0, A2DP, LE | |
| Positioning | GPS, GLONASS, BDS, GALILEO | |
| NFC | Yes | |
| Radio | Unspecified | |
| USB | USB Type-C, OTG |
| Features | Sensors | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
|---|---|---|
| Samsung DeX (desktop experience support) |
| Battery | Type | Li-Ion 4500 mAh |
|---|---|---|
| Charging | 25W wired, PD3.0, 50% in 30 min 15W wireless Reverse wireless |
| Misc | Colors | White, Graphite, Lavender, Olive |
|---|---|---|
| Models | SM-G990B, SM-G990B/DS, SM-G990U, SM-G990U1, SM-G990W, SM-G990E, SM-G9900, SM-G990B2, SM-G990U2, SM-G990W2, SM-G990U3 | |
| SAR | 0.77 W/kg (head) 0.90 W/kg (body) | |
| SAR EU | 0.95 W/kg (head) 1.48 W/kg (body) | |
| Price | $ 145.00 / € 249.44 / £ 159.99 / ₹ 37,999 |
| Our Tests | Performance | AnTuTu: 566529 (v8), 719696 (v9) GeekBench: 3049 (v5.1) GFXBench: 56fps (ES 3.1 onscreen) |
|---|---|---|
| Display | 792 nits max brightness (measured) | |
| Camera | Photo / Video | |
| Loudspeaker | -26.9 LUFS (Good) | |
| Battery (old) | Endurance rating 92h | |
A: Yes — official firmware from the manufacturer is generally safe when you match your device's exact model number and region. Flashing the wrong region or modified firmware can cause issues.
A: Samsung Galaxy S21 FE (SM-G990B) firmware is flashed using Odin. See the step-by-step guide above for the full procedure.
A: Some devices allow downgrading, others have anti-rollback protection that blocks it. Check the version-specific notes on each ROM page, or your model's community forum, before attempting a downgrade.
A: First, verify the firmware matches your exact model code (e.g. SM-S938B for Samsung, or the CPH-number for OPPO). Reinstall the manufacturer's USB drivers, use a rear USB 2.0 port directly on your PC, and retry. The troubleshooting box above the FAQ covers the most common failure modes.
