Digma Vox G450 3G Firmware Flash File Download [Stock Rom]

The Digma Vox G450 3G is an ultra-budget smartphone from 2017, designed by the Russian brand Digma for essential communication. It features a compact 4.5-inch display and is powered by a UNISOC (Spreadtrum) SC7731C processor running Android 6.0 Marshmallow. Due to its very basic hardware, the device is prone to extreme performance degradation. This guide provides the official stock ROM (.pac file), the definitive tool for reviving a bricked device, fixing software glitches, or performing a complete factory restore. Important: This firmware is specifically for the Digma Vox G450 3G. As a UNISOC/Spreadtrum device, it requires the SPD Upgrade Tool for flashing. Flashing this on a different model will cause a hard brick. This process will erase all data.

Quick Device Specs

• Device: Digma Vox G450 3G
• Release year: 2017
• Chipset: UNISOC SC7731C (3G)
• Display: 4.5″ TFT Display
• Battery: 1600 mAh
• Original OS: Android 6.0 (Marshmallow)

Required Downloads

To flash a Spreadtrum/UNISOC device, you will need the specific drivers and flashing tool. You can find the downloads for these in our main guide linked below.

• SPD Upgrade Tool or SPD Research Tool
• Spreadtrum/UNISOC USB Drivers

Stock ROM (Firmware)

How to Flash the Stock Firmware

Flashing the stock ROM onto your Digma Vox G450 requires a Windows PC and the SPD Upgrade Tool. Here are the key steps:

1. Install the correct UNISOC/Spreadtrum USB drivers on your PC.
2. Launch the SPD Upgrade Tool and load the downloaded .pac firmware file.
3. Power off your phone completely.
4. Click “Start” in the tool, then connect your phone while holding the Volume Down key to begin flashing.

For the complete, step-by-step guide with pictures and download links for the tools, please see our main pillar article: How to Use the SPD Upgrade Tool to Flash Your Smartphone.

Device-Specific Troubleshooting for Digma Vox G450

• PC Not Detecting the Phone? Check Drivers: The most common problem is a driver issue. The SPD Upgrade Tool will not see your phone if the drivers aren’t installed correctly. You must install the Spreadtrum VCOM drivers, which often requires disabling ‘Driver Signature Enforcement’ in Windows first.
• Using the Correct Boot Key Sequence: The phone must be fully powered off. Click the “Start” button in the flash tool first. Then, press and hold the Volume Down button on your phone and connect the USB cable. Do not release the button until you see the ‘Downloading’ progress bar appear.
• Stuck on Google Account (FRP Lock): If you are stuck on the Google account setup screen after a factory reset, flashing this stock ROM will completely wipe the device and remove the FRP lock, allowing you to set it up from scratch.
• 3G Network Decommissioning: Be aware that the Vox G450 is a 3G-only device. Many mobile carriers around the world are shutting down their 3G networks. After flashing, if you have no signal, it may be because 3G service is no longer available in your area.

FAQs

Q1. My phone has only 512MB of RAM and is unusable. Will this help?
Yes. For a device with extremely limited RAM, a clean flash of the stock ROM is the only way to make it usable again. It removes all accumulated junk files and non-essential background processes, restoring the phone to its original, lightweight state.

Q2. Can I upgrade this phone to a newer Android version?
No. The Digma Vox G450’s hardware is too old and limited to support any Android version beyond 6.0 Marshmallow. There are no official updates and a custom ROM community for this device is virtually non-existent.

Q3. Will this unlock my phone from its network carrier?
No. Flashing the stock firmware restores the phone’s original software, but it does not remove the SIM/network lock put in place by a carrier.

Q4. What is a .pac file?
A .pac file is a packed firmware file used for Spreadtrum/UNISOC chipsets. It contains all the necessary partitions—system, boot, recovery, etc.—in a single, integrated file for flashing.