Samsung Galaxy S20 Ultra (Korea) is a samsung device (codename: sm-g988n). FirmwareMirror hosts 32 verified firmware builds, covering: KOO, LUC. Available as official firmware. Last updated: March 2025. All files MD5-verified. Free, no registration.
Find and download official Stock ROM for Samsung Galaxy S20 Ultra (Korea) (sm-g988n). All firmware files include MD5 hash verification and are available for direct download.
| Version | Method | Size | Release Date | MD5 Hash | Download |
|---|---|---|---|---|---|
| G988NKSS8IYC2/G988NOKR8IYC2/G988NKSS8IYC2 | Odin | 137.25 MB | 2025-03-01 |
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| G988NKSS7IYA1/G988NOKR7IYA1/G988NKSS7IYA1 | Odin | 301.83 MB | 2025-01-01 |
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| G988NKSS6IXJ1/G988NOKR6IXJ1/G988NKSS6IXJ1 | Odin | 332.73 MB | 2024-10-01 |
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| G988NKSS5IXH1/G988NOKR5IXH1/G988NKSS5IXH1 | Odin | 344.36 MB | 2024-08-01 |
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| G988NKSS4IXE4/G988NOKR4IXE4/G988NKSS4IXE4 | Odin | 349.42 MB | 2024-05-01 |
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| G988NKSU3IWH9/G988NOKR3IWH9/G988NKSU3IWH5 | Odin | 384.06 MB | 2023-08-01 |
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| G988NKSU3IWE1/G988NOKR3IWE1/G988NKSU3IWC8 | Odin | 1.36 GB | 2023-05-01 |
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| G988NKSS3IXB1/G988NOKR3IXB1/G988NKSS3IXB1 | Odin | 355.03 MB | 2024-02-01 |
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| G988NKSS3IWK1/G988NOKR3IWK1/G988NKSS3IWK1 | Odin | 372.8 MB | 2023-11-01 |
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| G988NKSU3IWCG/G988NOKR3IWCG/G988NKSU3IWC8 | Odin | 1.48 GB | 2023-03-01 |
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| G988NKSU2IWB4/G988NOKR2IWB4/G988NKSU2IWB3 | Odin | 1.84 GB | 2023-02-01 |
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| G988NKSU2IWB3/G988NOKR2IWB3/G988NKSU2IWB3 | Odin | 1.87 GB | 2023-02-01 |
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| G988NKSU2HVL3/G988NOKR2HVL3/G988NKSU2HVL1 | Odin | 2.14 GB | 2022-12-01 |
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| G988NKSU1DUD9/G988NOKR1DUD9/G988NKSU1DUD9 | Odin | 977.91 MB | 2021-04-01 |
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| G988NKSU1FUL9/G988NOKR1FUL9/G988NKSU1FUKE | Odin | 1.75 GB | 2021-12-01 |
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| G988NKSU1FVA8/G988NOKR1FVA8/G988NKSU1FVA3 | Odin | 1.62 GB | 2022-01-01 |
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| G988NKSU1GVC7/G988NOKR1GVC7/G988NKSU1GVB4 | Odin | 1.42 GB | 2022-03-01 |
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| G988NKSU1DUB6/G988NOKR1DUB6/G988NKSU1DUB1 | Odin | 1.22 GB | 2021-02-01 |
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| G988NKSU1GVE4/G988NOKR1GVE4/G988NKSU1GVE3 | Odin | 951.16 MB | 2022-05-01 |
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| G988NKSS1EUI4/G988NOKR1EUI4/G988NKSU1EUI3 | Odin | 72.93 MB | 2021-09-01 |
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| G988NKSU1GVC3/G988NOKR1GVC3/G988NKSU1GVB4 | Odin | 1.42 GB | 2022-03-01 |
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| G988NKSU1EUI3/G988NOKR1EUI3/G988NKSU1EUI3 | Odin | 247.69 MB | 2021-09-01 |
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| G988NKSU1CUA3/G988NOKR1CUA3/G988NKSU1CUA3 | Odin | 1.79 GB | 2021-01-01 |
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| G988NKSU1GVG3/G988NOKR1GVG3/G988NKSU1GVG1 | Odin | 651.78 MB | 2022-07-01 |
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| G988NKSU1DUE1/G988NOKR1DUE1/G988NKSU1DUD9 | Odin | 977.57 MB | 2021-05-01 |
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| G988NKSU1EUH1/G988NOKR1EUH1/G988NKSU1EUH1 | Odin | 313.26 MB | 2021-08-01 |
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| G988NKSU1DUCF/G988NOKR1DUCF/G988NKSU1DUC9 | Odin | 1.04 GB | 2021-03-01 |
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| G988NKSU1DUFA/G988NOKR1DUFA/G988NKSU1DUF8 | Odin | 697.89 MB | 2021-06-01 |
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| G988NKSU1GVHB/G988NOKR1GVHB/G988NKSU1GVH3 | Odin | 2.09 GB | 2022-08-01 |
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| G988NKSU1HVJG/G988NOKR1HVJG/G988NKSU1HVJG | Odin | 2.2 GB | 2022-10-01 |
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| G988NKSU1EUFC/G988NOKR1EUFC/G988NKSU1EUFC | Odin | 692.91 MB | 2021-06-01 |
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| G988NKSU1CTKF/G988NOKR1CTKF/G988NKSU1CTKD | Odin | 1.86 GB | N/A |
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Also available with 5G
Also known as Samsung Galaxy S20 Ultra LTE
| Network | Technology | GSM / CDMA / HSPA / EVDO / LTE |
|---|---|---|
| 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, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 | |
| Speed | HSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps |
| Launch | Announced | 2020, February 11 |
|---|---|---|
| Status | Available. Released 2020, March 15 |
| Body | Dimensions | 166.9 x 76 x 8.8 mm (6.57 x 2.99 x 0.35 in) |
|---|---|---|
| Weight | 220 g (7.76 oz) | |
| Build | Glass front (Gorilla Glass 6), glass back (Gorilla Glass 6), aluminum frame | |
| SIM | · Nano-SIM + eSIM · 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+, 1400 nits (peak) |
|---|---|---|
| Size | 6.9 inches, 114.0 cm2 (~89.9% screen-to-body ratio) | |
| Resolution | 1440 x 3200 pixels, 20:9 ratio (~511 ppi density) | |
| Protection | Corning Gorilla Glass 6 | |
| 120Hz@FHD/60Hz@QHD refresh rate |
| Platform | OS | Android 10, upgradable to Android 13, One UI 5 |
|---|---|---|
| Chipset | Exynos 990 (7 nm+) Qualcomm SM8250 Snapdragon 865 5G (7 nm+) | |
| CPU | Octa-core (2x2.73 GHz Mongoose M5 & 2x2.50 GHz Cortex-A76 & 4x2.0 GHz Cortex-A55) Octa-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55) | |
| GPU | Mali-G77 MP11 Adreno 650 |
| Memory | Card slot | microSDXC (uses shared SIM slot) |
|---|---|---|
| Internal | 128GB 12GB RAM, 512GB 16GB RAM | |
| UFS 3.0 |
| Main Camera | Triple | 108 MP, f/1.8, 26mm (wide), 1/1.33", 0.8µm, PDAF, OIS 48 MP, f/3.5, 103mm (periscope telephoto), 1/2.0", 0.8µm, PDAF, OIS, 4x optical zoom, 10x hybrid zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video 0.3 MP, TOF 3D, f/1.0, (depth) |
|---|---|---|
| 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 | 40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, 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 | |
| Positioning | GPS, GLONASS, BDS, GALILEO | |
| NFC | Yes | |
| Radio | FM radio (USA & Canada only) | |
| USB | USB Type-C 3.2, OTG |
| Features | Sensors | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer |
|---|---|---|
| Samsung DeX, Samsung Wireless DeX (desktop experience support) ANT+ |
| Battery | Type | Li-Ion 5000 mAh |
|---|---|---|
| Charging | 45W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless |
| Misc | Colors | Cosmic Grey, Cosmic Black, Cloud White |
|---|---|---|
| Models | SM-G988B/DS | |
| SAR | 0.94 W/kg (head) 0.95 W/kg (body) | |
| SAR EU | 0.32 W/kg (head) 1.56 W/kg (body) | |
| Price | About 690 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 S20 Ultra (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.
