Samsung Galaxy A12 (Korea) is a samsung device (codename: sm-a125n). FirmwareMirror hosts 18 verified firmware builds, covering: KOO. Available as official firmware. Last updated: November 2024. All files MD5-verified. Free, no registration.
Find and download official Stock ROM for Samsung Galaxy A12 (Korea) (sm-a125n). All firmware files include MD5 hash verification and are available for direct download.
| Version | Method | Size | Release Date | MD5 Hash | Download |
|---|---|---|---|---|---|
| A125NKSS4CXK2/A125NOKR4CXK2/A125NKOS4CXK1 | Odin | 662.98 MB | 2024-11-01 |
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| A125NKSU3CXJ1/A125NOKR3CXJ1/A125NKOS3CXE1 | Odin | 203.64 MB | 2024-10-01 |
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| A125NKSS3CXE1/A125NOKR3CXE1/A125NKOS3CXE1 | Odin | 208.01 MB | 2024-05-01 |
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| A125NKSU2BUG5/A125NOKR2BUG5/A125NKOU2BUF2 | Odin | 736.63 MB | 2021-07-01 |
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| A125NKSU2BUF4/A125NOKR2BUF4/A125NKOU2BUF2 | Odin | 738.84 MB | 2021-06-01 |
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| A125NKSU2BUI3/A125NOKR2BUI3/A125NKOU2BUI3 | Odin | 461.77 MB | 2021-09-01 |
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| A125NKSU2BVB3/A125NOKR2BVB3/A125NKOU2BVB1 | Odin | 170.05 MB | 2022-02-01 |
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| A125NKSU2BUK3/A125NOKR2BUK3/A125NKOU2BUK1 | Odin | 271.21 MB | 2021-11-01 |
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| A125NKSU2CVH2/A125NOKR2CVH2/A125NKOU2CVH2 | Odin | 799.71 MB | 2022-08-01 |
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| A125NKSU2CWG2/A125NOKR2CWG2/A125NKOU2CWF1 | Odin | 245.89 MB | 2023-07-01 |
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| A125NKSU2CWA2/A125NOKR2CWA2/A125NKOU2CWA1 | Odin | 304.68 MB | 2023-01-01 |
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| A125NKSU2CVL1/A125NOKR2CVL1/A125NKOU2CVK3 | Odin | 413.61 MB | 2022-12-01 |
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| A125NKSU2AUD1/A125NOKR2AUD1/A125NKOU2AUC2 | Odin | 1.57 GB | 2021-04-01 |
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| A125NKSS2CXA1/A125NOKR2CXA1/A125NKOS2CXA1 | Odin | 219.17 MB | 2024-01-01 |
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| A125NKSS2BVE1/A125NOKR2BVE1/A125NKOS2BVE1 | Odin | 1.89 GB | 2022-05-01 |
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| A125NKSU2BUL1/A125NOKR2BUL1/A125NKOU2BUL1 | Odin | 252.2 MB | 2021-12-01 |
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| A125NKSU2AUC1/A125NOKR2AUC1/A125NKOU2AUC1 | Odin | 117.2 MB | 2021-03-01 |
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| A125NKSU1AUA9/A125NOKR1AUA9/A125NKOU1AUA8 | Odin | 145.98 MB | 2021-01-01 |
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| Network | Technology | GSM / HSPA / LTE |
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | |
| 3G bands | HSDPA 850 / 900 / 2100 | |
| 4G bands | 1, 3, 5, 7, 8, 20, 28, 38, 40, 41 | |
| Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Launch | Announced | 2020, November 24. Released 2020, December 21 |
|---|---|---|
| Status | Discontinued |
| Body | Dimensions | 164 x 75.8 x 8.9 mm (6.46 x 2.98 x 0.35 in) |
|---|---|---|
| Weight | 205 g (7.23 oz) | |
| Build | Glass front, plastic back, plastic frame | |
| SIM | · Nano-SIM · Nano-SIM + Nano-SIM |
| Display | Type | PLS LCD |
|---|---|---|
| Size | 6.5 inches, 102.0 cm2 (~82.1% screen-to-body ratio) | |
| Resolution | 720 x 1600 pixels, 20:9 ratio (~270 ppi density) |
| Platform | OS | Android 10, upgradable to Android 12, One UI 4.1 |
|---|---|---|
| Chipset | Mediatek MT6765 Helio P35 (12 nm) | |
| CPU | Octa-core (4x2.35 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53) | |
| GPU | PowerVR GE8320 |
| Memory | Card slot | microSDXC (dedicated slot) |
|---|---|---|
| Internal | 32GB 2GB RAM, 32GB 3GB RAM, 32GB 4GB RAM, 64GB 2GB RAM, 64GB 4GB RAM, 128GB 2GB RAM, 128GB 3GB RAM, 128GB 4GB RAM, 128GB 6GB RAM | |
| eMMC 5.1 |
| Main Camera | Quad | 48 MP, f/2.0, 26mm (wide), AF 5 MP, f/2.2, 123˚ (ultrawide) 2 MP (macro) Auxiliary lens |
|---|---|---|
| Features | LED flash, panorama, HDR | |
| Video | 1080p@30fps |
| Selfie camera | Single | 8 MP, f/2.2 |
|---|---|---|
| Video | 1080p@30fps |
| Sound | Loudspeaker | Yes |
|---|---|---|
| 3.5mm jack | Yes |
| Comms | WLAN | Wi-Fi 802.11 b/g/n, Wi-Fi Direct |
|---|---|---|
| Bluetooth | 5.0, A2DP, LE | |
| Positioning | GPS, GLONASS, GALILEO, BDS | |
| NFC | Yes (market/region dependent) | |
| Radio | FM radio, RDS, recording | |
| USB | USB Type-C 2.0 |
| Features | Sensors | Fingerprint (side-mounted), accelerometer |
|---|---|---|
| Virtual proximity sensing |
| Battery | Type | Li-Po 5000 mAh |
|---|---|---|
| Charging | 15W wired |
| Misc | Colors | Black, White, Blue, Red |
|---|---|---|
| Models | SM-A125F/DSN, SM-A125F/DS, SM-A125F, SM-A125M, SM-A125U, SM-A125U1, SM-A125N, SM-A125W | |
| SAR EU | 0.67 W/kg (head) 1.38 W/kg (body) | |
| Price | About 80 EUR |
| Our Tests | Performance | AnTuTu: 107189 (v8) GeekBench: 1034 (v5.1) GFXBench: 5fps (ES 3.1 onscreen) |
|---|---|---|
| Display | 1363:1 contrast ratio, 472 nits max brightness (measured) | |
| Camera | Photo / Video | |
| Loudspeaker | -30.4 LUFS (Below average) | |
| Battery (old) | Endurance rating 123h | |
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 A12 (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.
