Samsung Galaxy Note20 (Korea) is a samsung device (codename: sm-n981n). FirmwareMirror hosts 37 verified firmware builds, covering: KOO, LUC. Available as official firmware. Last updated: August 2025. All files MD5-verified. Free, no registration.
Find and download official Stock ROM for Samsung Galaxy Note20 (Korea) (sm-n981n). 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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| N981NKSS9HYG5/N981NOKR9HYG5/N981NKSS9HYG1 | Odin | 292.38 MB | 2025-07-01 |
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| N981NKSS9HYG1/N981NOKR9HYG1/N981NKSS9HYG1 | Odin | 293.79 MB | 2025-07-01 |
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| N981NKSS8HYD1/N981NOKR8HYD1/N981NKSS8HYD1 | Odin | 316.54 MB | 2025-04-01 |
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| N981NKSS7HYA1/N981NOKR7HYA1/N981NKSS7HYA1 | Odin | 342.1 MB | 2025-01-01 |
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| N981NKSS6HXJ1/N981NOKR6HXJ1/N981NKSS6HXJ1 | Odin | 357.99 MB | 2024-10-01 |
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| N981NKSS5HXH1/N981NOKR5HXH1/N981NKSS5HXH1 | Odin | 366.26 MB | 2024-08-01 |
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| N981NKSS4HXFC/N981NOKR4HXFC/N981NKSS4HXFC | Odin | 367.56 MB | 2024-06-01 |
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| N981NKSS3HXE3/N981NOKR3HXE3/N981NKSS3HXE1 | Odin | 370.04 MB | 2024-05-01 |
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| N981NKSS3HXF1/N981NOKR3HXF1/N981NKSS3HXE1 | Odin | 368.87 MB | 2024-06-01 |
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| N981NKSU2HWH9/N981NOKR2HWH9/N981NKSU2HWH5 | Odin | 457.08 MB | 2023-08-01 |
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| N981NKSU2HWE8/N981NOKR2HWE8/N981NKSU2HWE6 | Odin | 1.41 GB | 2023-05-01 |
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| N981NKSU2HWB8/N981NOKR2HWB8/N981NKSU2HWB5 | Odin | 1.77 GB | 2023-02-01 |
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| N981NKSU2GVL3/N981NOKR2GVL3/N981NKSU2GVL1 | Odin | 2.18 GB | 2022-12-01 |
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| N981NKSS2HXC1/N981NOKR2HXC1/N981NKSS2HXC1 | Odin | 375.96 MB | 2024-03-01 |
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| N981NKSS2HWK1/N981NOKR2HWK1/N981NKSS2HWK1 | Odin | 450.97 MB | 2023-11-01 |
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| N981NKSU2HWL1/N981NOKR2HWL1/N981NKSU2HWKS | Odin | 386.65 MB | 2023-12-01 |
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| N981NKSU2HWD1/N981NOKR2HWD1/N981NKSU2HWCC | Odin | 1.43 GB | 2023-04-01 |
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| N981NKSSAHYH1/N981NOKRAHYH1/N981NKSSAHYH1 | Odin | 434.99 MB | 2025-08-01 |
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| N981NKSU1FVE9/N981NOKR1FVE9/N981NKSU1FVD5 | Odin | 970.25 MB | 2022-05-01 |
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| N981NKSU1CUB6/N981NOKR1CUB6/N981NKSU1CUB1 | Odin | 1.45 GB | 2021-02-01 |
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| N981NKSU1BTL6/N981NOKR1BTL6/N981NKSU1BTKK | Odin | 2.12 GB | N/A |
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| N981NKSU1FVC5/N981NOKR1FVC5/N981NKSU1FVB6 | Odin | 1.45 GB | 2022-03-01 |
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| N981NKSU1DUI4/N981NOKR1DUI4/N981NKSU1DUI2 | Odin | 73.22 MB | 2021-09-01 |
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| N981NKSU1BUA4/N981NOKR1BUA4/N981NKSU1BUA2 | Odin | 2.11 GB | 2021-01-01 |
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| N981NKSU1DUI2/N981NOKR1DUI2/N981NKSU1DUI2 | Odin | 257.66 MB | 2021-09-01 |
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| N981NKSU1CUH1/N981NOKR1CUH1/N981NKSU1CUG7 | Odin | 353.48 MB | 2021-08-01 |
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| N981NKSU1CUE1/N981NOKR1CUE1/N981NKSU1CUD7 | Odin | 1.25 GB | 2021-05-01 |
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| N981NKSU1FVG1/N981NOKR1FVG1/N981NKSU1FVG1 | Odin | 954.85 MB | 2022-07-01 |
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| N981NKSU1CUG1/N981NOKR1CUG1/N981NKSU1CUG1 | Odin | 727.96 MB | 2021-07-01 |
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| N981NKSU1GVK1/N981NOKR1GVK1/N981NKSU1GVJG | Odin | 2.22 GB | 2022-11-01 |
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| N981NKSU1CUCB/N981NOKR1CUCB/N981NKSU1CUC9 | Odin | 1.3 GB | 2021-03-01 |
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| N981NKSS1FVHC/N981NOKR1FVHC/N981NKSU1FVH7 | Odin | 2.22 GB | 2022-08-01 |
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| N981NKSU1FVHB/N981NOKR1FVHB/N981NKSU1FVH7 | Odin | 214.62 MB | 2022-08-01 |
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| N981NKSU1CUDA/N981NOKR1CUDA/N981NKSU1CUD7 | Odin | 1.25 GB | 2021-04-01 |
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| N981NKSU1EVAA/N981NOKR1EVAA/N981NKSU1EVA5 | Odin | 1.87 GB | 2022-01-01 |
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| N981NKSS1EULF/N981NOKR1EULB/N981NKSU1EUKE | Odin | 1.88 GB | 2021-12-01 |
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| N981NKSU1DUHA/N981NOKR1DUHA/N981NKSU1DUHB | Odin | 347.58 MB | 2021-08-01 |
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Also available with 4G/LTE only
Versions: SM-N981B (International); SM-N981U (USA); SM-N981U1 (USA unlocked); SM-N981W (Canada)
| Network | Technology | GSM / CDMA / HSPA / EVDO / LTE / 5G |
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | |
| CDMA 800 / 1900 | ||
| 3G bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | |
| CDMA2000 1xEV-DO | ||
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-N981U | |
| 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - SM-N981B | ||
| 2, 3, 4, 5, 7, 8, 12, 13, 18, 19, 20, 25, 29, 30, 38, 39, 40, 41, 46, 66, 71 - SM-N981W | ||
| 5G bands | 2, 5, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-N981U | |
| 1, 3, 5, 7, 8, 28, 40, 77, 78 SA/NSA/Sub6 - SM-N981B | ||
| 41, 66, 71 Sub6 - SM-N981W | ||
| Speed | HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G |
| Launch | Announced | 2020, August 05 |
|---|---|---|
| Status | Available. Released 2020, August 21 |
| Body | Dimensions | 161.6 x 75.2 x 8.3 mm (6.36 x 2.96 x 0.33 in) |
|---|---|---|
| Weight | 192 g (Sub6 5G), 194 g (mmWave 5G) (6.77 oz) | |
| Build | Glass front (Gorilla Glass 5), plastic back | |
| SIM | · Nano-SIM + eSIM · Nano-SIM + Nano-SIM | |
| IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Stylus, 26ms latency (Bluetooth integration, accelerometer, gyro) |
| Display | Type | Super AMOLED Plus, HDR10+ |
|---|---|---|
| Size | 6.7 inches, 108.4 cm2 (~89.2% screen-to-body ratio) | |
| Resolution | 1080 x 2400 pixels, 20:9 ratio (~393 ppi density) | |
| Protection | Corning Gorilla Glass 5 |
| Platform | OS | Android 10, upgradable to Android 13, One UI 5 |
|---|---|---|
| Chipset | Exynos 990 (7 nm+) - Global Qualcomm SM8250 Snapdragon 865 5G+ (7 nm+) - USA | |
| CPU | Octa-core (2x2.73 GHz Mongoose M5 & 2x2.50 GHz Cortex-A76 & 4x2.0 GHz Cortex-A55) - Global Octa-core (1x3.0 GHz Kryo 585 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55) - USA | |
| GPU | Mali-G77 MP11 - Global Adreno 650 - USA |
| Memory | Card slot | No |
|---|---|---|
| Internal | 128GB 8GB RAM, 256GB 8GB RAM | |
| UFS 3.0 |
| Main Camera | Triple | 12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, dual pixel PDAF, OIS 64 MP, f/2.0, 27mm (telephoto), 1/1.72", 0.8µm, PDAF, OIS, 3x hybrid zoom 12 MP, f/2.2, 120˚, 13mm (ultrawide), 1/2.55", 1.4µm |
|---|---|---|
| Features | LED flash, auto-HDR, panorama | |
| Video | 8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS & OIS |
| Selfie camera | Single | 10 MP, f/2.2, 26mm (wide), 1/3.2", 1.22µm, dual pixel PDAF |
|---|---|---|
| Features | HDR | |
| Video | 4K@30/60fps, 1080p@30fps |
| Sound | Loudspeaker | Yes, with stereo speakers |
|---|---|---|
| 3.5mm jack | No | |
| High-bitrate audio support Tuned by AKG |
| Comms | WLAN | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct |
|---|---|---|
| Bluetooth | 5.0, A2DP, LE, aptX | |
| Positioning | GPS, GLONASS, BDS, GALILEO | |
| NFC | Yes | |
| Radio | FM radio (Snapdragon model only; market/operator dependent) | |
| USB | USB Type-C 3.2, OTG |
| Features | Sensors | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer |
|---|---|---|
| Samsung Wireless DeX (desktop experience support) ANT+ |
| Battery | Type | Li-Ion 4300 mAh |
|---|---|---|
| Charging | 25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless |
| Misc | Colors | Mystic Green, Mystic Bronze, Mystic Gray, Mystic Red, Mystic Blue |
|---|---|---|
| Models | SM-N981B, SM-N981B/DS, SM-N981U, SM-N981U1, SM-N981W, SM-N9810, SM-N981N | |
| SAR | 0.95 W/kg (head) 0.72 W/kg (body) | |
| SAR EU | 0.68 W/kg (head) 1.37 W/kg (body) | |
| Price | About 430 EUR |
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 Note20 (Korea) 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.
