Zopo ZP350 Firmware Flash File Download [Stock Rom]

The Zopo ZP350 (MT6753M/MT6735M) was a budget-friendly smartphone offering dual-SIM capabilities. However, according to widespread user reports on technical forums like XDA-Developers, a significant number of users encountered a persistent “Invalid SIM” or “No Service” error, where the device would fail to register on mobile networks despite a functional SIM card. This issue, often accompanied by random reboots and unstable performance, pointed to corrupted IMEI data or a faulty baseband version. Flashing this official stock firmware is the definitive solution to restore the modem software and repair the IMEI, reinstating stable network connectivity.

Zopo ZP350 Firmware Details

Download Official Firmware for Zopo ZP350

Option 1: Android 5.1 Lollipop (For MT6753M Chipset)

Option 2: Android 6.0 Marshmallow (For MT6735M Chipset)

Why Flash This Specific Firmware?

• Fix “Invalid SIM” / “No Service” Error: User reports on XDA-Developers confirm that reflashing the stock firmware restores the baseband and IMEI, resolving the network connectivity issues that render the phone unable to make calls or use mobile data.
• Resolve Random Reboots and System Instability: Community feedback indicates that software corruption often causes the ZP350 to reboot unexpectedly. A clean firmware flash replaces the corrupted system files, restoring day-to-day stability.
• Recover from a Bootloop: If your Zopo ZP350 is stuck on the boot logo due to a failed update or a corrupted OS, this firmware is the only way to rewrite the system partition and achieve a successful boot.
• Remove Malware or Bloatware: Flashing the stock ROM wipes the device completely, eliminating any persistent malware or unwanted software that cannot be removed through a normal factory reset.

Some of the Bug / Firmware Fixes

• Firmware Build 20160628 (Android 6.0): Includes stability patches that directly address the random reboot and system freeze issues reported by users of the MT6735M variant.
• Baseband and modem updates to improve network reception and SIM card recognition.
• General security patches and performance optimizations for the respective Android versions.

Crucial Prerequisites Before Flashing

• Backup All Data: The flashing process will completely wipe your phone’s internal memory.
• Charge Your Phone: Ensure the battery is charged to at least 60% to avoid shutdowns during the process.
• Install Correct USB Drivers: You must install the appropriate MediaTek USB VCOM drivers for your device’s chipset on your Windows PC.
• Identify Your Chipset: As emphasized above, confirm whether your device uses the MT6753M or MT6735M chipset to download the correct firmware.

How to Flash the Firmware

Flashing the firmware onto your Zopo ZP350 requires the SP Flash Tool. Follow these steps:

1. Download and extract the correct firmware file on your computer.
2. Launch the SP Flash Tool and load the `MTK_AllInOne_DA.bin` and scatter file (MT6753M_Android_scatter.txt or MT6735M_Android_scatter.txt) from the extracted firmware folder.
3. Ensure the download agent and scatter file are correctly loaded, then select “Download Only” mode.
4. Click the “Download” button in SP Flash Tool.
5. Power off your Zopo ZP350 completely. Do not connect it to the PC yet.
6. Connect the powered-off phone to your computer via USB cable. The tool will automatically detect the device and begin flashing.
7. Wait for the process to complete, which will be confirmed with a green checkmark and a “Download OK” message.
8. Disconnect the phone and power it on. The first boot can take 5 to 10 minutes.

For a complete guide with screenshots and more details, please visit our official tutorial: How to Flash Stock Firmware on MediaTek (MTK) Smartphones using SP Flash Tool