Samsung Galaxy Z Flip4 (Korea) is a samsung device (codename: sm-f721n). FirmwareMirror hosts 46 verified firmware builds, covering: KOO, SKC. Available as official firmware. Last updated: May 2026. All files MD5-verified. Free, no registration.
Find and download official Stock ROM for Samsung Galaxy Z Flip4 (Korea) (sm-f721n). 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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| F721NKSS8IZE2/F721NOKR8IZE2/F721NKSS8IZE2 | Odin | 491.76 MB | 2026-05-01 |
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| F721NKSS7IZB2/F721NOKR7IZB2/F721NKSS7IZB1 | Odin | 1.41 GB | 2026-02-01 |
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| F721NKSS7IZC1/F721NOKR7IZC1/F721NKSS7IZB1 | Odin | 397.26 MB | 2026-03-01 |
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| F721NKSU6HYD9/F721NOKR6HYD9/F721NKSU6HYD2 | Odin | 430.58 MB | 2025-04-01 |
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| F721NKSS6IYK3/F721NOKR6IYK3/F721NKSU6IYI2 | Odin | 486.86 MB | 2025-11-01 |
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| F721NKSS6HYE2/F721NOKR6HYE2/F721NKSU6HYD2 | Odin | 400.63 MB | 2025-05-01 |
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| F721NKSS6IZA1/F721NOKR6IZA1/F721NKSU6IYI2 | Odin | 417.62 MB | 2026-01-01 |
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| F721NKSS6IYL1/F721NOKR6IYL1/F721NKSU6IYI2 | Odin | 432.26 MB | 2025-12-01 |
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| F721NKSU6IYJ1/F721NOKT6IYJ1/F721NKSU6IYI2 | Odin | 491.76 MB | 2025-10-01 |
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| F721NKSU6IYJ1/F721NOKR6IYJ1/F721NKSU6IYI2 | Odin | 517.83 MB | 2025-10-01 |
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| F721NKSS6HYF1/F721NOKR6HYF1/F721NKSU6HYD2 | Odin | 382.3 MB | 2025-06-01 |
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| F721NKSS6HYGB/F721NOKR6HYGB/F721NKSU6HYD2 | Odin | 3.23 GB | 2025-07-01 |
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| F721NKSS6HYFD/F721NOKT6HYFD/F721NKSU6HYD2 | Odin | 367.08 MB | 2025-06-01 |
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| F721NKSS6GYBE/F721NOKT6GYBE/F721NKSS6GYBE | Odin | 4 GB | 2025-02-01 |
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| F721NKSU5GXK8/F721NOKR5GXK8/F721NKSU5GXJ8 | Odin | 447.36 MB | 2024-11-01 |
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| F721NKSS5GYA5/F721NOKT5GYA5/F721NKSU5GXJ8 | Odin | 395.99 MB | 2025-01-01 |
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| F721NKSS5GXLF/F721NOKR5GXLF/F721NKSU5GXJ8 | Odin | 416.64 MB | 2024-12-01 |
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| F721NKSS5GXKC/F721NOKT5GXKC/F721NKSU5GXJ8 | Odin | 436.46 MB | 2024-11-01 |
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| F721NKSU5GXJA/F721NOKT5GXJA/F721NKSU5GXJ8 | Odin | 571.38 MB | 2024-10-01 |
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| F721NKSU4GXH7/F721NOKR4GXH7/F721NKSU4GXH2 | Odin | 629.36 MB | 2024-08-01 |
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| F721NKSS4FXG2/F721NOKR4FXG2/F721NKSS4FXG2 | Odin | 2.44 GB | 2024-07-01 |
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| F721NKSS4FXH1/F721NOKR4FXH1/F721NKSS4FXH1 | Odin | 2.43 GB | 2024-08-01 |
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| F721NKSS4GXIC/F721NOKT4GXIC/F721NKSS4GXIC | Odin | 620.1 MB | 2024-09-01 |
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| F721NKSS3FXE5/F721NOKT3FXE5/F721NKSS3FXE5 | Odin | 2.44 GB | 2024-05-01 |
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| F721NKSS3FXF1/F721NOKT3FXF1/F721NKSS3FXF1 | Odin | 2.44 GB | 2024-06-01 |
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| F721NKSU2CWE6/F721NOKR2CWE6/F721NKSU2CWE6 | Odin | 2.37 GB | 2023-05-01 |
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| F721NKSU2DWH5/F721NOKT2DWH5/F721NKSU2DWGA | Odin | 422.71 MB | 2023-08-01 |
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| F721NKSU2FXE3/F721NOKR2FXE3/F721NKSU2FXD7 | Odin | 2.44 GB | 2024-05-01 |
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| F721NKSS2DWK3/F721NOKT2DWK3/F721NKSS2DWK3 | Odin | 3.07 GB | 2023-11-01 |
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| F721NKSU2DWI3/F721NOKR2DWI3/F721NKSU2DWGA | Odin | 2.92 GB | 2023-09-01 |
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| F721NKSU2EXD2/F721NOKR2EXD2/F721NKSU2EXD1 | Odin | 3.24 GB | 2024-04-01 |
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| F721NKSS2DWK1/F721NOKT2DWH5/F721NKSS2DWJ1 | Odin | 357.9 MB | 2023-11-01 |
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| F721NKSU2EWL1/F721NOKT2EWL1/F721NKSU2EWL4 | Odin | 3.26 GB | 2023-12-01 |
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| F721NKSU2FXDC/F721NOKT2FXDC/F721NKSU2FXD7 | Odin | 2.44 GB | 2024-04-01 |
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| F721NKSS2EXAF/F721NOKR2EXAF/F721NKSS2EXAF | Odin | 3.25 GB | 2024-01-01 |
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| F721NKSU2CWCC/F721NOKR2CWCC/F721NKSU2CWCA | Odin | 2.45 GB | 2023-03-01 |
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| F721NKSU1BVL9/F721NOKT1BVL9/F721NKSU1BVL1 | Odin | 3.15 GB | 2022-12-01 |
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| F721NKSS1AVJ7/F721NOKR1AVJ7/F721NKSU1AVJ1 | Odin | 2.71 GB | 2022-10-01 |
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| F721NKSU1BVK5/F721NOKR1BVK5/F721NKSU1BVK1 | Odin | 3.19 GB | 2022-11-01 |
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| F721NKSU1AVJ5/F721NOKR1AVJ5/F721NKSU1AVJ1 | Odin | 302.04 MB | 2022-10-01 |
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| F721NKSU1CWB1/F721NOKT1CWB1/F721NKSU1CWAA | Odin | 2.84 GB | 2023-02-01 |
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| F721NKSU1AVGD/F721NOKR1AVGD/F721NKSU1AVG9 | Odin | 1.43 GB | 2022-07-01 |
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| F721NKSU1AVIA/F721NOKR1AVIA/F721NKSU1AVI4 | Odin | 680.55 MB | 2022-09-01 |
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| F721NKSU1AVHH/F721NOKR1AVHH/F721NKSU1AVH3 | Odin | 1.33 GB | 2022-08-01 |
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| F721NKSU1AVJA/F721NOKT1AVJA/F721NKSU1AVJ1 | Odin | 2.78 GB | 2022-10-01 |
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| F721NKSU1AVHI/F721NOKR1AVHI/F721NKSU1AVHI | Odin | 1.33 GB | 2022-08-01 |
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| Network | Technology | GSM / CDMA / HSPA / EVDO / LTE / 5G |
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | |
| CDMA 800 / 1900 | ||
| 3G bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | |
| HSDPA 850 / 900 / 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 | |
| 5G bands | 1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International | |
| SA/NSA/Sub6/mmWave - USA | ||
| Speed | HSPA, LTE (6CA), 5G |
| Launch | Announced | 2022, August 10 |
|---|---|---|
| Status | Available. Released 2022, August 25 |
| Body | Dimensions | Unfolded: 165.2 x 71.9 x 6.9 mm Folded: 84.9 x 71.9 x 15.9-17.1 mm |
|---|---|---|
| Weight | 187 g (6.60 oz) | |
| Build | Plastic front (unfolded), glass back (Gorilla Glass Victus+), aluminum frame | |
| SIM | Nano-SIM + eSIM | |
| IPX8 water resistant (up to 1.5m for 30 min) Armor aluminum frame |
| Display | Type | Foldable Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak) |
|---|---|---|
| Size | 6.7 inches, 101.5 cm2 (~85.4% screen-to-body ratio) | |
| Resolution | 1080 x 2640 pixels (~426 ppi density) | |
| Cover display: Super AMOLED, 1.9 inches, 260 x 512 pixels (Gorilla Glass Victus+) |
| Platform | OS | Android 12, upgradable to Android 16, One UI 8 |
|---|---|---|
| Chipset | Qualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm) | |
| CPU | Octa-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510) | |
| GPU | Adreno 730 |
| Memory | Card slot | No |
|---|---|---|
| Internal | 128GB 8GB RAM, 256GB 8GB RAM, 512GB 8GB RAM | |
| UFS 3.1 |
| Main Camera | Dual | 12 MP, f/1.8, 24mm (wide), 1/1.76", 1.8µm, dual pixel PDAF, OIS 12 MP, f/2.2, 13mm, 123˚ (ultrawide), 1/3.06", 1.12µm |
|---|---|---|
| Features | LED flash, HDR, panorama | |
| Video | 4K@30/60fps, 1080p@60/240fps, HDR10+ |
| Selfie camera | Single | 10 MP, f/2.4, 26mm (wide), 1/3.0", 1.22µm |
|---|---|---|
| Features | HDR | |
| Video | 4K@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/6, dual-band, Wi-Fi Direct |
|---|---|---|
| Bluetooth | 5.2, A2DP, LE | |
| Positioning | GPS, GLONASS, GALILEO, BDS | |
| NFC | Yes | |
| Radio | No | |
| USB | USB Type-C 2.0, OTG |
| Features | Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass, barometer |
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| Battery | Type | Li-Po 3700 mAh |
|---|---|---|
| Charging | 25W wired, 50% in 30 min 15W wireless 4.5W reverse wireless |
| Misc | Colors | Bora Purple, Graphite, Pink Gold, Blue, Yellow, White, Navy, Khaki, Red |
|---|---|---|
| Models | SM-F721B, SM-F721B/DS, SM-F721N, SM-F721U, SM-F721U1, SM-F721W, SM-F7210 | |
| SAR | 1.02 W/kg (head) 0.94 W/kg (body) | |
| SAR EU | 1.15 W/kg (head) 1.20 W/kg (body) | |
| Price | $ 210.43 / € 343.95 / £ 229.00 / ₹ 39,999 |
| Our Tests | Performance | AnTuTu: 685754 (v8) | 800001 (v9) GeekBench: 3913 (v5.1) GFXBench: 74fps (ES 3.1 onscreen) |
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| Display | 919 nits max brightness (measured) | |
| Camera | Photo / Video | |
| Loudspeaker | -27.5 LUFS (Good) | |
| Battery (old) | Endurance rating 75h | |
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 Z Flip4 (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.
