Samsung Galaxy S23 Ultra (Korea) is a samsung device (codename: sm-s918n). FirmwareMirror hosts 41 verified firmware builds, covering: KOO. Available as official firmware. Last updated: April 2026. All files MD5-verified. Free, no registration.
Find and download official Stock ROM for Samsung Galaxy S23 Ultra (Korea) (sm-s918n). All firmware files include MD5 hash verification and are available for direct download.
| Version | Method | Size | Release Date | MD5 Hash | Download |
|---|---|---|---|---|---|
| S918NKSS7EZC2/S918NOKR7EZC2/S918NKSS7EZC2 | Odin | 416.11 MB | 2026-03-01 |
N/A
|
Download |
| S918NKSS7EZB2/S918NOKR7EZB2/S918NKSS7EZB1 | Odin | 403.58 MB | 2026-02-01 |
N/A
|
Download |
| S918NKSU7FZDT/S918NOKR7FZDT/S918NKSU7FZDP | Odin | 421.55 MB | 2026-04-01 |
N/A
|
Download |
| S918NKSU6DYG9/S918NOKR6DYG9/S918NKSU6DYG9 | Odin | 3.07 GB | 2025-07-01 |
N/A
|
Download |
| S918NKSU6DYD9/S918NOKR6DYD9/S918NKSU6DYD9 | Odin | 474.44 MB | 2025-04-01 |
N/A
|
Download |
| S918NKSS6EYI9/S918NOKR6EYI9/S918NKSU6EYI7 | Odin | 365 MB | 2025-09-01 |
N/A
|
Download |
| S918NKSS6DYG8/S918NOKR6DYG8/S918NKSS6DYG8 | Odin | 3.07 GB | 2025-07-01 |
N/A
|
Download |
| S918NKSS6EYJ7/S918NOKR6EYJ7/S918NKSU6EYI7 | Odin | 485.52 MB | 2025-10-01 |
N/A
|
Download |
| S918NKSU6EYI7/S918NOKR6EYI7/S918NKSU6EYI7 | Odin | 366.67 MB | 2025-09-01 |
N/A
|
Download |
| S918NKSS6DYE5/S918NOKR6DYE5/S918NKSS6DYE5 | Odin | 432.84 MB | 2025-05-01 |
N/A
|
Download |
| S918NKSS6EYK3/S918NOKR6EYK3/S918NKSU6EYI7 | Odin | 481.26 MB | 2025-11-01 |
N/A
|
Download |
| S918NKSS6CYB3/S918NOKR6CYB3/S918NKSS6CYB3 | Odin | 4.5 GB | 2025-02-01 |
N/A
|
Download |
| S918NKSU6DYG2/S918NOKR6DYG2/S918NKSU6DYG2 | Odin | 3.1 GB | 2025-07-01 |
N/A
|
Download |
| S918NKSS6EZA1/S918NOKR6EZA1/S918NKSU6EYI7 | Odin | 421.32 MB | 2026-01-01 |
N/A
|
Download |
| S918NKSS6EYL1/S918NOKR6EYL1/S918NKSU6EYI7 | Odin | 433.8 MB | 2025-12-01 |
N/A
|
Download |
| S918NKSS6DYG1/S918NOKR6DYG1/S918NKSS6DYG1 | Odin | 421.55 MB | 2025-07-01 |
N/A
|
Download |
| S918NKSS6DYE1/S918NOKR6DYE1/S918NKSS6DYE1 | Odin | 453.02 MB | 2025-05-01 |
N/A
|
Download |
| S918NKSU5CXK4/S918NOKR5CXK4/S918NKSU5CXK4 | Odin | 438.1 MB | 2024-11-01 |
N/A
|
Download |
| S918NKSU5CYB1/S918NOKR5CYB1/S918NKSU5CYB1 | Odin | 409.1 MB | 2025-02-01 |
N/A
|
Download |
| S918NKSS5CXLS/S918NOKR5CXLS/S918NKSS5CXLS | Odin | 416.71 MB | 2024-12-01 |
N/A
|
Download |
| S918NKSS5CXKA/S918NOKR5CXKA/S918NKSS5CXKA | Odin | 430.06 MB | 2024-11-01 |
N/A
|
Download |
| S918NKSU4CXH7/S918NOKR4CXH7/S918NKSU4CXH7 | Odin | 580.86 MB | 2024-08-01 |
N/A
|
Download |
| S918NKSS4CXG4/S918NOKR4CXG4/S918NKSS4CXG4 | Odin | 2.17 GB | 2024-07-01 |
N/A
|
Download |
| S918NKSU4CXI1/S918NOKR4CXI1/S918NKSU4CXH7 | Odin | 583.33 MB | 2024-09-01 |
N/A
|
Download |
| S918NKSS4CXJ1/S918NOKR4CXJ1/S918NKSS4CXJ1 | Odin | 577.32 MB | 2024-10-01 |
N/A
|
Download |
| S918NKSS4CXGJ/S918NOKR4CXGJ/S918NKSS4CXGJ | Odin | 2.17 GB | 2024-07-01 |
N/A
|
Download |
| S918NKSS3CXE4/S918NOKR3CXE4/S918NKSS3CXE4 | Odin | 2.17 GB | 2024-05-01 |
N/A
|
Download |
| S918NKSS3CXE1/S918NOKR3CXE1/S918NKSS3CXE1 | Odin | 2.17 GB | 2024-05-01 |
N/A
|
Download |
| S918NKSU2ZWH8/S918NOKR2ZWH8/S918NKSU2BWH8 | Odin | 2.27 GB | 2023-08-01 |
N/A
|
Download |
| S918NKSU2ZWI8/S918NOKR2ZWI8/S918NKSU2BWI6 | Odin | 1.36 GB | 2023-09-01 |
N/A
|
Download |
| S918NKSU2BWK7/S918NOKR2BWK7/S918NKSU2BWJA | Odin | 3.3 GB | 2023-11-01 |
N/A
|
Download |
| S918NKSS2CXD5/S918NOKR2CXD5/S918NKSU2CXC3 | Odin | 2.17 GB | 2024-04-01 |
N/A
|
Download |
| S918NKSU2AWF5/S918NOKR2AWF5/S918NKSU2AWF1 | Odin | 1.13 GB | 2023-06-01 |
N/A
|
Download |
| S918NKSU2ZWIB/S918NOKR2ZWIB/S918NKSU2BWI6 | Odin | 1.36 GB | 2023-09-01 |
N/A
|
Download |
| S918NKSU2CXCG/S918NOKR2CXCG/S918NKSU2CXC3 | Odin | 2.17 GB | 2024-03-01 |
N/A
|
Download |
| S918NKSS2BXAF/S918NOKR2BXAF/S918NKSS2BXAF | Odin | 3.29 GB | 2024-01-01 |
N/A
|
Download |
| S918NKSU2ZWHO/S918NOKR2ZWHO/S918NKSU2BWHO | Odin | 1.91 GB | 2023-08-01 |
N/A
|
Download |
| S918NKSU2AWGJ/S918NOKR2AWGJ/S918NKSU2AWGH | Odin | 3.01 GB | 2023-07-01 |
N/A
|
Download |
| S918NKSU1AWC8/S918NOKR1AWC8/S918NKSU1AWC5 | Odin | 2.53 GB | 2023-03-01 |
N/A
|
Download |
| S918NKSU1AWA6/S918NOKR1AWA6/S918NKSU1AWA6 | Odin | 2.7 GB | 2023-01-01 |
N/A
|
Download |
| S918NKSU1AWBD/S918NOKR1AWBD/S918NKSU1AWB6 | Odin | 2.65 GB | 2023-02-01 |
N/A
|
Download |
| 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, 46, 48, 66, 71 - USA | ||
| 5G bands | 1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International | |
| 1, 7, 28, 41, 66, 71, 78, 258, 260, 261 SA/NSA/Sub6/mmWave - USA | ||
| Speed | HSPA, LTE (CA), 5G |
| Launch | Announced | 2023, February 01 |
|---|---|---|
| Status | Available. Released 2023, February 17 |
| Body | Dimensions | 163.4 x 78.1 x 8.9 mm (6.43 x 3.07 x 0.35 in) |
|---|---|---|
| Weight | 234 g (8.25 oz) | |
| Build | Glass front (Gorilla Glass Victus 2), glass back (Gorilla Glass Victus 2), 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) Armor aluminum frame Stylus (Bluetooth integration, accelerometer, gyro) |
| Display | Type | Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (HBM), 1750 nits (peak) |
|---|---|---|
| Size | 6.8 inches, 114.7 cm2 (~89.9% screen-to-body ratio) | |
| Resolution | 1440 x 3088 pixels, 19.3:9 ratio (~500 ppi density) | |
| Protection | Corning Gorilla Glass Victus 2 |
| Platform | OS | Android 13, up to 4 major Android upgrades, One UI 8.5 |
|---|---|---|
| Chipset | Qualcomm SM8550-AC Snapdragon 8 Gen 2 (4 nm) | |
| CPU | Octa-core (1x3.36 GHz Cortex-X3 & 2x2.8 GHz Cortex-A715 & 2x2.8 GHz Cortex-A710 & 3x2.0 GHz Cortex-A510) | |
| GPU | Adreno 740 |
| Memory | Card slot | No |
|---|---|---|
| Internal | 256GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM, 1TB 12GB 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, 70mm (telephoto), 1/3.52", 1.12µm, PDAF, OIS, 3x optical zoom 10 MP, f/4.9, 230mm (periscope telephoto), 1/3.52", 1.12µm, PDAF, OIS, 10x optical zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video |
|---|---|---|
| Features | Laser AF, LED flash, auto-HDR, panorama | |
| Video | 8K@24/30fps, 4K@30/60fps, 1080p@30/60/120/240fps, 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, tri-band, Wi-Fi Direct |
|---|---|---|
| Bluetooth | 5.3, A2DP, LE | |
| Positioning | GPS, GALILEO, GLONASS, BDS, QZSS | |
| NFC | Yes | |
| Radio | No | |
| 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) Ultra Wideband (UWB) support |
| Battery | Type | Li-Ion 5000 mAh |
|---|---|---|
| Charging | 45W wired, PD3.0, 65% in 30 min 15W wireless (Qi) 4.5W reverse wireless |
| Misc | Colors | Phantom Black, Green, Cream, Lavender, Graphite, Sky Blue, Lime, Red, BMW M Edition |
|---|---|---|
| Models | SM-S918B, SM-S918B/DS, SM-S918U, SM-S918U1, SM-S918W, SM-S918N, SM-S9180, SM-S918E, SM-S918E/DS | |
| SAR | 1.12 W/kg (head) 0.92 W/kg (body) | |
| SAR EU | 0.96 W/kg (head) 1.40 W/kg (body) | |
| Price | $ 449.95 / € 528.02 / £ 349.99 / ₹ 99,999 |
| Our Tests | Performance | AnTuTu: 1241531 (v9) GeekBench: 4927 (v5.1) 3DMark: 3790 (Wild Life Extreme) |
|---|---|---|
| Display | 1274 nits max brightness (measured) | |
| Camera | Photo / Video | |
| Loudspeaker | -25.6 LUFS (Very good) | |
| Battery | Active use score 13:24h | |
| Battery (old) | Endurance rating 126h | |
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 S23 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.
