Samsung Galaxy M21 2021 is a samsung device (codename: sm-m215g). FirmwareMirror hosts 15 verified firmware builds, covering: INS. Available as official firmware. Last updated: May 2025. All files MD5-verified. Free, no registration.
Find and download official Stock ROM for Samsung Galaxy M21 2021 (sm-m215g). 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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| M215GDDS7CYE1/M215GODM7CYD1/M215GDDS7CYE1 | Odin | 267.71 MB | 2025-05-01 |
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| M215GDDS6CXK1/M215GODM6CXF1/M215GDDS6CXG1 | Odin | 201.83 MB | 2024-11-01 |
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| M215GDDS5CXE2/M215GODM5CXE2/M215GDDS5CXE1 | Odin | 217.84 MB | 2024-05-01 |
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| M215GDDS4CXA1/M215GODM4CWH2/M215GDDS4CWK1 | Odin | 227.54 MB | 2024-01-01 |
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| M215GDDU4CWJ1/M215GODM4CWH2/M215GDDU4CWG1 | Odin | 243.26 MB | 2023-10-01 |
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| M215GDDU4CWF1/M215GODM4CWF1/M215GDDU4CWE1 | Odin | 1.1 GB | 2023-06-01 |
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| M215GDDU3CWB4/M215GODM3CWB4/M215GDDU3CWB3 | Odin | 1.11 GB | 2023-02-01 |
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| M215GDDS3CWD1/M215GODM3CWB4/M215GDDS3CWD1 | Odin | 1.11 GB | 2023-04-01 |
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| M215GDDU2CWA3/M215GODM2CWA1/M215GDDU2CWA1 | Odin | 1.38 GB | 2023-01-01 |
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| M215GDDU2BVH1/M215GODM2BVH1/M215GDDU2BVH1 | Odin | 1.54 GB | 2022-08-01 |
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| M215GDDU1AUF3/M215GODM1AUF3/M215GDDU1AUE7 | Odin | 789.65 MB | 2021-06-01 |
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| M215GDDU1AUG2/M215GODM1AUF3/M215GDDU1AUE7 | Odin | 791.75 MB | 2021-07-01 |
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| M215GDDS1AUL1/M215GODM1AUI3/M215GDDS1AUK1 | Odin | 1.93 GB | 2021-12-01 |
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| M215GDDU1AUI1/M215GODM1AUI3/M215GDDU1AUH1 | Odin | 144.21 MB | 2021-09-01 |
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| M215GDDU1BVCC/M215GODM1BVCC/M215GDDU1BVCC | Odin | 876.36 MB | 2022-03-01 |
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| Network | Technology | GSM / HSPA / LTE |
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | |
| 3G bands | HSDPA 850 / 900 / 1900 / 2100 | |
| 4G bands | 1, 3, 5, 7, 8, 20, 38, 40, 41 | |
| Speed | HSPA, LTE |
| Launch | Announced | 2020, March 18. Released 2020, March 23 |
|---|---|---|
| Status | Discontinued |
| Body | Dimensions | 159 x 75.1 x 8.9 mm (6.26 x 2.96 x 0.35 in) |
|---|---|---|
| Weight | 188 g (6.63 oz) | |
| Build | Glass front (Gorilla Glass 3), plastic back, plastic frame | |
| SIM | · Nano-SIM · Nano-SIM + Nano-SIM |
| Display | Type | Super AMOLED, 420 nits (peak) |
|---|---|---|
| Size | 6.4 inches, 100.5 cm2 (~84.2% screen-to-body ratio) | |
| Resolution | 1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density) | |
| Protection | Corning Gorilla Glass 3 |
| Platform | OS | Android 10, upgradable to Android 11, One UI 3.1 Core |
|---|---|---|
| Chipset | Exynos 9611 (10 nm) | |
| CPU | Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53) | |
| GPU | Mali-G72 MP3 |
| Memory | Card slot | microSDXC (dedicated slot) |
|---|---|---|
| Internal | 64GB 4GB RAM, 128GB 6GB RAM | |
| UFS 2.1 |
| Main Camera | Triple | 48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12µm Auxiliary lens |
|---|---|---|
| Features | LED flash, panorama, HDR | |
| Video | 4K@30fps, 1080p@30fps, 720p@240fps, gyro-EIS |
| Selfie camera | Single | 20 MP, f/2.2, 26mm (wide) |
|---|---|---|
| Features | HDR | |
| Video | 1080p@30fps |
| Sound | Loudspeaker | Yes |
|---|---|---|
| 3.5mm jack | Yes |
| Comms | WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, 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 (rear-mounted), accelerometer, gyro, proximity, compass |
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| Battery | Type | Li-Po 6000 mAh |
|---|---|---|
| Charging | 15W wired |
| Misc | Colors | Midnight Blue, Raven Black |
|---|---|---|
| Models | SM-M215F, SM-M215F/DS, SM-M215F/DSN | |
| SAR | 0.47 W/kg (head) | |
| Price | About 190 EUR |
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 M21 2021 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.
