The Digma Vox S506 4G (model CS5013PL) is an entry-level smartphone from the Russian brand Digma, released in 2016. It was designed to provide an affordable 4G LTE experience, featuring a 5.0-inch display and powered by a UNISOC (Spreadtrum) SC9832 processor. Due to its very basic hardware, the device is prone to performance issues over time. This guide provides the official stock ROM (.pac file), which is the most effective way to unbrick the device, fix software bugs, or resolve bootloop issues by performing a complete factory restore. Important: This firmware is specifically for the Digma Vox S506 4G. 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 S506 4G
- Model Number: CS5013PL
- Release year: 2016
- Chipset: UNISOC SC9832
- Display: 5.0″ IPS LCD
- Battery: 2000 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)
| Build Date | Android | Type | Download | Chipset |
|---|---|---|---|---|
| 2016-12-19 | 6.0 | SPD .pac Firmware |
Download | UNISOC/SPD |
How to Flash the Stock Firmware
Flashing the stock ROM onto your Digma Vox S506 requires a Windows PC and the SPD Upgrade Tool. Here are the key steps:
- Install the correct UNISOC/Spreadtrum USB drivers on your PC.
- Launch the SPD Upgrade Tool and load the downloaded
.pacfirmware file. - Power off your phone completely.
- Click “Start” in the tool, then connect your phone while holding the Volume Down key to begin flashing.
For detailed, step-by-step instructions with screenshots and tool download links, please follow our comprehensive pillar guide: How to Use the SPD Upgrade Tool to Flash Your Smartphone.
Device-Specific Troubleshooting for Digma Vox S506
- Phone Randomly Loses Network Signal: Some users have reported that the Vox S506 can unexpectedly lose its mobile network connection, requiring a reboot to fix. If you face this issue, flashing this stock ROM is a crucial step. It completely rewrites the modem firmware, which can resolve software-related radio glitches that cause this specific problem.
- Proximity Sensor Not Working During Calls: A common complaint for this model is the screen staying on during a call, leading to accidental button presses with your face. A clean flash of the stock ROM will restore the original sensor drivers and calibration. If the problem persists after flashing, it is likely a hardware fault with the sensor itself.
- 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.
FAQs
Q1. Is the Digma Vox S506 4G good for modern apps like TikTok or Instagram?
No. The device’s hardware, with its 1GB of RAM and older processor, is not powerful enough to run modern, media-heavy social media apps smoothly. They will likely be very slow, crash frequently, and cause the phone to overheat. This phone is best suited for basic tasks like calls, SMS, and very light browsing.
Q2. Can I upgrade this phone to Android Nougat or Oreo?
No. The official software support for the Vox S506 4G ended with Android 6.0 Marshmallow. Due to its very basic hardware and regional focus, there is no active custom ROM community for it, so no unofficial upgrades are available.
Q3. My phone’s 8GB of storage is always full. Will this help?
Yes, a clean flash is the best way to address this. It removes all user data and accumulated junk files, restoring the maximum amount of free space possible. After flashing, it is highly recommended to use a microSD card for photos and media and to be very selective about which apps you install.
