Mobicel Astro Firmware Flash File Download [Stock Rom]

The Mobicel Astro is a budget smartphone running Android 8.1 Oreo on a Spreadtrum SP7731E chipset. Users commonly report issues with network signal dropping frequently or showing “Emergency Calls Only” despite good coverage. The device also suffers from touchscreen responsiveness problems, with certain areas of the screen becoming dead zones or registering inaccurate touches. Additionally, many users experience random system freezes and app crashes, particularly when using the camera or browsing applications. These issues are typically caused by corrupted modem firmware and touch driver conflicts. Flashing the official stock firmware provides a complete system restoration, resolving network instability and touch calibration problems.

This guide provides the official stock ROM packages for the Mobicel Astro. As a Spreadtrum (UNISOC) device, it must be flashed using the SPD Upgrade Tool.

Mobicel Astro Firmware Details

Below are the key specifications for the Mobicel Astro. This firmware will restore the device to its original Android 8.1 Oreo software. Note that this is a Spreadtrum (UNISOC) device and requires the SPD Tool.

Download Official Firmware for Mobicel Astro

Choose the firmware that matches your device variant. The MTN version is specifically for South African networks.

• Build: 151118 (Generic Variant)
  • File Name: Mobicel_Astro_SP7731E_151118_8.1_SPD.zip
  • Size: Available on download page
  • 🔗 Download Link: Download (MediaFire)
• Build: MTN_ZA_07_300918 (MTN South Africa Variant)
  • File Name: Mobicel_Astro_SP7731E_MTN_ZA_07_300918_8.1_SPD.zip
  • Size: Available on download page
  • 🔗 Download Link: Download (MediaFire)
• Build: 171019_MIRA (MIRA Variant)
  • File Name: Mobicel_Astro_SP7731E_171019_8.1_MIRA.zip
  • Size: Available on download page
  • 🔗 Download Link: Download (MediaFire)

Why Flash This Specific Firmware?

Flashing the official Mobicel Astro firmware addresses the most critical network and touch-related issues reported by users:

• Fix Network Signal Drops and “No Service” Errors: The Astro frequently loses network connection or shows invalid IMEI. This firmware restore repairs the NVRAM and modem partitions, bringing back stable network connectivity and proper SIM card recognition.
• Resolve Touchscreen Dead Zones and Inaccurate Touch Response: Many users report certain areas of the screen becoming unresponsive or registering touches in wrong locations. This process reinstalls the touch panel drivers and recalibrates the entire screen.
• Stop Random System Freezes and Application Crashes: The device often freezes during use, especially when accessing the gallery or using resource-intensive apps. A clean firmware install replaces corrupted system files that cause these stability issues.
• Fix Camera Focus and Image Quality Problems: The rear camera may fail to focus properly or produce blurry images. This firmware reflash recalibrates the camera hardware and reinstalls the camera HAL drivers.

Crucial Prerequisites Before Flashing

Before you begin, back up any accessible data. This procedure will permanently delete everything on the phone.

• Install the latest SPD Upgrade Tool (Research Download) on your Windows PC.
• Install the correct Spreadtrum (UNISOC) USB Drivers.
• A reliable USB cable and a PC with a stable power supply.
• Ensure your Mobicel Astro has at least 50% battery charge.

How to Flash the Firmware

This firmware must be installed using the SPD Upgrade Tool on a Windows computer. The process involves connecting the powered-off phone to the PC.

1. Download and extract the Mobicel_Astro_SP7731E_151118_8.1_SPD.zip file (or your chosen variant) to a new folder.
2. Install the Spreadtrum USB drivers and the SPD Upgrade Tool on your computer.
3. Launch the ResearchDownload.exe tool.
4. Click on the “Load Packet” button and navigate to the extracted firmware folder. Select the .pac file.
5. Completely power off your Mobicel Astro.
6. Click the “Start” button in the SPD tool.
7. While the tool is waiting, connect your powered-off Mobicel Astro to the PC via the USB cable.
8. Wait for a “Download OK” or “Success” message before disconnecting the phone.

For a complete, step-by-step tutorial with screenshots, please follow our master guide:

→ How to Use the SPD Upgrade Tool to Flash Your Smartphone

Disclaimer: Flashing your device is an advanced procedure that will erase all your data and carries a risk of permanently damaging your device if not done correctly. We are not responsible for any data loss or hardware failures. Proceed with extreme caution and ensure you have selected the correct firmware variant for your device.