Samsung Galaxy S25 Ultra (Korea) is a samsung device (codename: sm-s938n). FirmwareMirror hosts 20 verified firmware builds, covering: KOO, SKC, KTC. Available as official firmware. Last updated: May 2026. All files MD5-verified. Free, no registration.
Find and download official Stock ROM for Samsung Galaxy S25 Ultra (Korea) (sm-s938n). 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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| S938NKSU9CZDP/S938NOKR9CZDP/S938NKSU9CZDP | Odin | 494.37 MB | 2026-04-01 |
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| S938NKSS8BZB2/S938NOKR8BZB2/S938NKSS8BZB1 | Odin | 535.49 MB | 2026-02-01 |
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| S938NKSS8BZC1/S938NOKR8BZC1/S938NKSS8BZB1 | Odin | 216.72 MB | 2026-03-01 |
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| S938NKSS7BYK5/S938NOKR7BYK5/S938NKSS7BYK2 | Odin | 570.29 MB | 2025-11-01 |
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| S938NKSS7BYLR/S938NOKR7BYLR/S938NKSS7BYK2 | Odin | 516.59 MB | 2025-12-01 |
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| S938NKSS7BYKG/S938NOKR7BYKG/S938NKSS7BYK2 | Odin | 527.33 MB | 2025-11-01 |
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| S938NKSS6BYJ2/S938NOKR6BYJ2/S938NKSS6BYIF | Odin | 568.08 MB | 2025-10-01 |
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| S938NKSS5BYI9/S938NOKR5BYI9/S938NKSU5BYI3 | Odin | 600.69 MB | 2025-09-01 |
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| S938NKSS5AYG6/S938NOKR5AYG6/S938NKSS5AYG6 | Odin | 3.64 GB | 2025-07-01 |
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| S938NKSS5AYF6/S938NOKR5AYF6/S938NKSS5AYF6 | Odin | 521.41 MB | 2025-06-01 |
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| S938NKSU5BYI3/S938NOKR5BYI3/S938NKSU5BYI3 | Odin | 574.39 MB | 2025-09-01 |
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| S938NKSU5AYFT/S938NOKR5AYFT/S938NKSU5AYFT | Odin | 3.58 GB | 2025-06-01 |
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| S938NKSS4AYE5/S938NOKR4AYE5/S938NKSS4AYE5 | Odin | 535.95 MB | 2025-05-01 |
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| S938NKSS3AYDF/S938NOKR3AYDF/S938NKSS3AYDF | Odin | 554.64 MB | 2025-04-01 |
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| S938NKSU2AYD9/S938NOKR2AYD9/S938NKSU2AYD9 | Odin | 659.11 MB | 2025-04-01 |
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| S938NKSSACZE1/S938NOKRACZE1/S938NKSSACZE1 | Odin | 216.72 MB | 2026-05-01 |
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| S938NKSU1AYB5/S938NOKR1AYB5/S938NKSU1AYB3 | Odin | 555.4 MB | 2025-02-01 |
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| S938NKSU1AYC3/S938NOKR1AYC3/S938NKSU1AYC3 | Odin | 886.63 MB | 2025-03-01 |
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| S938NKSU1AYB3/S938NOKR1AYB3/S938NKSU1AYB3 | Odin | 889.55 MB | 2025-02-01 |
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| S938NKSU1AYA2/S938NOKR1AYA2/S938NKSU1AYA2 | Odin | 899.6 MB | 2025-01-01 |
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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, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - International | |
| 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 48, 66, 71 - USA unlocked | ||
| 5G bands | 1, 2, 3, 5, 7, 8, 12, 20, 25, 26, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International | |
| 1, 2, 5, 7, 25, 28, 41, 66, 71, 77, 78, 257, 258, 260, 261 SA/NSA/Sub6/mmWave - USA unlocked | ||
| Speed | HSPA, LTE (CA), 5G |
| Launch | Announced | 2025, January 22 |
|---|---|---|
| Status | Available. Released 2025, February 03 |
| Body | Dimensions | 162.8 x 77.6 x 8.2 mm (6.41 x 3.06 x 0.32 in) |
|---|---|---|
| Weight | 218 g (7.69 oz) | |
| Build | Glass front (Corning Gorilla Armor 2), glass back (Gorilla Glass Victus 2), titanium frame (grade 5) | |
| SIM | · Nano-SIM + Nano-SIM + eSIM + eSIM (max 2 at a time) - INT · Nano-SIM + eSIM + eSIM (max 2 at a time) - USA · Nano-SIM + Nano-SIM - CN | |
| IP68 dust tight and water resistant (immersible up to 1.5m for 30 min) Stylus |
| Display | Type | Dynamic LTPO AMOLED 2X, 120Hz, HDR10+, 2600 nits (peak) |
|---|---|---|
| Size | 6.9 inches, 116.9 cm2 (~92.5% screen-to-body ratio) | |
| Resolution | 1440 x 3120 pixels, 19.5:9 ratio (~498 ppi density) | |
| Protection | Corning Gorilla Armor 2, Mohs level 6 | |
| DX anti-reflective coating |
| Platform | OS | Android 15, up to 7 major Android upgrades, One UI 8 |
|---|---|---|
| Chipset | Qualcomm SM8750-AC Snapdragon 8 Elite (3 nm) | |
| CPU | Octa-core (2x4.47 GHz Oryon V2 Phoenix L + 6x3.53 GHz Oryon V2 Phoenix M) | |
| GPU | Adreno 830 (1200 MHz) |
| Memory | Card slot | No |
|---|---|---|
| Internal | 256GB 12GB RAM, 512GB 12GB RAM, 1TB 12GB RAM, 1TB 16GB RAM | |
| UFS 4.0 |
| Main Camera | Quad | 200 MP, f/1.7, 24mm (wide), 1/1.3", 0.6µm, multi-directional PDAF, OIS 10 MP, f/2.4, 67mm (telephoto), 1/3.52", 1.12µm, PDAF, OIS, 3x optical zoom 50 MP, f/3.4, 111mm (periscope telephoto), 1/2.52", 0.7µm, PDAF, OIS, 5x optical zoom 50 MP, f/1.9, 120˚ (ultrawide), 1/2.5", 0.7µm, dual pixel PDAF, Super Steady video |
|---|---|---|
| Features | Laser AF, Best Face, LED flash, auto-HDR, panorama | |
| Video | 8K@24/30fps, 4K@30/60/120fps, 1080p@30/60/120/240fps, 10-bit HDR, HDR10+, stereo sound rec., gyro-EIS |
| Selfie camera | Single | 12 MP, f/2.2, 26mm (wide), 1/3.2", 1.12µm, dual pixel PDAF |
|---|---|---|
| Features | HDR, HDR10+ | |
| Video | 4K@30/60fps, 1080p@30fps |
| Sound | Loudspeaker | Yes, with stereo speakers |
|---|---|---|
| 3.5mm jack | No | |
| High-bitrate audio support |
| Comms | WLAN | Wi-Fi 802.11 a/b/g/n/ac/6e/7, tri-band, Wi-Fi Direct |
|---|---|---|
| Bluetooth | 5.4, A2DP, LE | |
| Positioning | GPS, GLONASS, BDS, GALILEO, QZSS | |
| NFC | Yes | |
| Radio | No | |
| USB | USB Type-C 3.2, DisplayPort 1.2, OTG |
| Features | Sensors | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer |
|---|---|---|
| Samsung DeX, Samsung Wireless DeX (desktop experience support) Ultra Wideband (UWB) support |
| Battery | Type | Li-Ion 5000 mAh |
|---|---|---|
| Charging | 45W wired, PD3.0, 65% in 30 min 15W wireless (Qi2 Ready) 4.5W reverse wireless |
| Misc | Colors | Titanium Silver Blue, Titanium Black, Titanium White Silver, Titanium Gray, Titanium Jade Green, Titanium Jet Black, Titanium Pink Gold |
|---|---|---|
| Models | SM-S938B, SM-S938B/DS, SM-S938U, SM-S938U1, SM-S938W, SM-S938N, SM-S9380, SM-S938E, SM-S938E/DS | |
| SAR | 1.26 W/kg (head) 0.64 W/kg (body) | |
| SAR EU | 1.25 W/kg (head) 1.42 W/kg (body) | |
| Price | $ 752.94 / € 899.00 / £ 759.99 / ₹ 104,990 |
| Our Tests | Performance | AnTuTu: 2207809 (v10) GeekBench: 9846 (v6) 3DMark: 6687 (Wild Life Extreme) |
|---|---|---|
| Display | 1417 nits max brightness (measured) | |
| Loudspeaker | -24.6 LUFS (Very good) | |
| Battery | Active use score 14:49h | |
| EU LABEL | Energy | Class B |
|---|---|---|
| Battery | 44:54h endurance, 2000 cycles | |
| Free fall | Class A (270 falls) | |
| Repairability | Class C |
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 S25 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.
