Samsung Galaxy A25 5G (Korea) is a samsung device (codename: sm-a256n). FirmwareMirror hosts 17 verified firmware builds, covering: KOO. Available as official firmware. Last updated: February 2026. All files MD5-verified. Free, no registration.
Find and download official Stock ROM for Samsung Galaxy A25 5G (Korea) (sm-a256n). 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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| A256NKSS9DZB2/A256NOKR9DZB2/A256NKOS9DZB1 | Odin | 104.57 MB | 2026-02-01 |
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| A256NKSS8DZA1/A256NOKR8DZA1/A256NKOS8DZA1 | Odin | 243.33 MB | 2026-01-01 |
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| A256NKSS7DYK3/A256NOKR7DYK3/A256NKOS7DYK1 | Odin | 298.68 MB | 2025-11-01 |
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| A256NKSS6DYI5/A256NOKR6DYI5/A256NKOU6DYI3 | Odin | 248.58 MB | 2025-09-01 |
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| A256NKSU6DYI4/A256NOKR6DYI4/A256NKOU6DYI3 | Odin | 296.4 MB | 2025-09-01 |
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| A256NKSS6CYG1/A256NOKR6CYG1/A256NKOS6CYG1 | Odin | 2.35 GB | 2025-07-01 |
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| A256NKSU5CYE2/A256NOKR5CYE2/A256NKOU5CYD4 | Odin | 253.25 MB | 2025-05-01 |
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| A256NKSS5BYB1/A256NOKR5BYB1/A256NKOS5BYB1 | Odin | 3.22 GB | 2025-02-01 |
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| A256NKSU5BXK1/A256NOKR5BXK1/A256NKOU5BXK1 | Odin | 253.27 MB | 2024-11-01 |
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| A256NKSS4BXJ1/A256NOKR4BXJ1/A256NKOS4BXJ1 | Odin | 330.08 MB | 2024-10-01 |
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| A256NKSS3BXH1/A256NOKR3BXH1/A256NKOS3BXH1 | Odin | 346.08 MB | 2024-08-01 |
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| A256NKSU2BXE5/A256NOKR2BXE5/A256NKOU2BXE5 | Odin | 350.53 MB | 2024-05-01 |
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| A256NKSS2AXE3/A256NOKR2AXE3/A256NKOS2AXE3 | Odin | 1.86 GB | 2024-05-01 |
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| A256NKSU2BXG1/A256NOKR2BXG1/A256NKOU2BXE5 | Odin | 20.03 MB | 2024-07-01 |
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| A256NKSU1AXB6/A256NOKR1AXB6/A256NKOU1AWL1 | Odin | 1.86 GB | 2024-02-01 |
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| A256NKSS1AXA1/A256NOKR1AXA1/A256NKOU1AWL1 | Odin | 1.87 GB | 2024-01-01 |
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| A256NKSU1AWL1/A256NOKR1AWL1/A256NKOU1AWL1 | Odin | 1.88 GB | 2023-12-01 |
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| Network | Technology | GSM / HSPA / LTE / 5G |
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | |
| 3G bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | |
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 20, 26, 28, 38, 40, 41, 66 | |
| 5G bands | 1, 3, 5, 7, 8, 26, 28, 40, 41, 66, 77, 78 SA/NSA/Sub6 | |
| Speed | HSPA, LTE, 5G |
| Launch | Announced | 2023, December 11 |
|---|---|---|
| Status | Available. Released 2023, December 16 |
| Body | Dimensions | 161 x 76.5 x 8.3 mm (6.34 x 3.01 x 0.33 in) |
|---|---|---|
| Weight | 197 g (6.95 oz) | |
| Build | Glass front, plastic frame, plastic back | |
| SIM | · Nano-SIM · Nano-SIM + Nano-SIM |
| Display | Type | Super AMOLED, 120Hz, 1000 nits (HBM) |
|---|---|---|
| Size | 6.5 inches, 103.7 cm2 (~84.2% screen-to-body ratio) | |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio (~396 ppi density) |
| Platform | OS | Android 14, up to 4 major Android upgrades, One UI 7 |
|---|---|---|
| Chipset | Exynos 1280 (5 nm) | |
| CPU | Octa-core (2x2.4 GHz Cortex-A78 & 6x2.0 GHz Cortex-A55) | |
| GPU | Mali-G68 |
| Memory | Card slot | microSDXC (uses shared SIM slot) |
|---|---|---|
| Internal | 128GB 4GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 6GB RAM, 256GB 8GB RAM |
| Main Camera | Triple | 50 MP, f/1.8, 27mm (wide), 1/2.76", 0.64µm, PDAF, OIS 8 MP, f/2.2, 120˚ (ultrawide), 1/4", 1.12µm 2 MP (macro) |
|---|---|---|
| Features | LED flash, panorama, HDR | |
| Video | 4K@30fps, 1080p@30/60fps, gyro-EIS |
| Selfie camera | Single | 13 MP, f/2.2, (wide), 1/3.06", 1.12µm |
|---|---|---|
| Video | 1080p@30fps |
| Sound | Loudspeaker | Yes, with stereo speakers |
|---|---|---|
| 3.5mm jack | Yes |
| Comms | WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
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| Bluetooth | 5.3, A2DP, LE | |
| Positioning | GPS, GLONASS, GALILEO, BDS, QZSS | |
| NFC | Yes (market/region dependent) | |
| Radio | Market/region dependent | |
| USB | USB Type-C 2.0 |
| Features | Sensors | Fingerprint (side-mounted), accelerometer, gyro, compass |
|---|---|---|
| Virtual proximity sensing |
| Battery | Type | 5000 mAh |
|---|---|---|
| Charging | 25W wired |
| Misc | Colors | Brave Black, Personality Yellow, Fantasy Blue, Optimistic Blue |
|---|---|---|
| Models | SM-A256E, SM-A256E/DS, SM-A256E/DSN, SM-A256B, SM-A256B/DS, SM-A256B/DSN, SM-A256U, SM-A256U1 | |
| SAR EU | 0.46 W/kg (head) 1.19 W/kg (body) | |
| Price | $ 129.00 / € 243.47 / £ 127.84 / ₹ 19,999 |
| Our Tests | Performance | AnTuTu: 443234 (v9), 480771 (v10) GeekBench: 2023 (v5), 2098 (v6) 3DMark: 643 (Wild Life Extreme) |
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| Display | 1030 nits max brightness (measured) | |
| Camera | Photo / Video | |
| Loudspeaker | -26.0 LUFS (Very good) | |
| Battery | Active use score 10:19h | |
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 A25 5G (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.
