Samsung Z3 is a samsung device (codename: sm-z300h). FirmwareMirror hosts 1 verified firmware builds, covering: INS. Available as official firmware. Last updated: 2026. All files MD5-verified. Free, no registration.
Find and download official Stock ROM for Samsung Z3 (sm-z300h). All firmware files include MD5 hash verification and are available for direct download.
| Version | Method | Size | Release Date | MD5 Hash | Download |
|---|---|---|---|---|---|
| Z300HDDU0BPI2/Z300HODD0BPI2/Z300HDDU0BPD4 | Odin | 829.31 MB | N/A |
N/A
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Download |
Versions: Z300H/DD (India)
| Network | Technology | GSM / HSPA |
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G bands | HSDPA 900 / 2100 | |
| Speed | HSPA |
| Launch | Announced | 2015, October. Released 2015, October |
|---|---|---|
| Status | Discontinued |
| Body | Dimensions | 141.6 x 70 x 7.9 mm (5.57 x 2.76 x 0.31 in) |
|---|---|---|
| Weight | 137 g (4.83 oz) | |
| SIM | Hybrid Dual SIM (Micro-SIM, dual stand-by) |
| Display | Type | Super AMOLED |
|---|---|---|
| Size | 5.0 inches, 68.9 cm2 (~69.5% screen-to-body ratio) | |
| Resolution | 720 x 1280 pixels, 16:9 ratio (~294 ppi density) |
| Platform | OS | Tizen 2.3, upgradable to 2.4 |
|---|---|---|
| Chipset | Spreadtrum SC7730 | |
| CPU | Quad-core 1.3 GHz Cortex-A7 | |
| GPU | Mali-400 |
| Memory | Card slot | microSDXC (uses shared SIM slot) |
|---|---|---|
| Internal | 8GB 1GB RAM |
| Main Camera | Single | 8 MP, f/2.2, AF |
|---|---|---|
| Features | LED flash, panorama, HDR | |
| Video | 720p@30fps |
| Selfie camera | Single | 5 MP, f/2.2 |
|---|---|---|
| Video |
| Sound | Loudspeaker | Yes |
|---|---|---|
| 3.5mm jack | Yes |
| Comms | WLAN | Wi-Fi 802.11 b/g/n, Wi-Fi Direct |
|---|---|---|
| Bluetooth | 4.0, A2DP, LE | |
| Positioning | GPS, GLONASS | |
| NFC | No | |
| Radio | FM radio | |
| USB | microUSB 2.0, OTG |
| Features | Sensors | Accelerometer, proximity |
|---|---|---|
| MP4/H.264 player MP3/WAV/AAC/Flac player Photo viewer Document viewer |
| Battery | Type | Li-Ion 2600 mAh, removable |
|---|---|---|
| Talk time | Up to 15 h (3G) | |
| Music play | Up to 55 h |
| Misc | Colors | Black, Silver, Gold |
|---|---|---|
| Models | SM-Z300H/DD, SM-Z300H | |
| SAR | 0.70 W/kg (head) 0.77 W/kg (body) | |
| SAR EU | 0.53 W/kg (head) 0.48 W/kg (body) | |
| Price | About 110 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 Z3 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.
