The Hotwav Cosmos V20 is a device that can suffer from serious software issues, leaving users with a non-functional phone. One of the most common and critical problems reported by users is the device being infected with stubborn malware or viruses that cannot be removed by antivirus apps or factory resets. Another frequent issue is the phone getting stuck in a bootloop, where it never boots past the Hotwav logo. These problems make the phone unusable. The only guaranteed fix for such deep-level software corruption is to flash the official stock firmware, which completely wipes the device and installs a fresh, clean version of the operating system.
Hotwav Cosmos V20 Firmware Details
| Device | Hotwav Cosmos V20 |
| Model | Cosmos V20 |
| Chipset | Spreadtrum SC7731 |
| Android Version | 6.0 (Marshmallow) |
| Firmware Version | 168_20161217 |
| Build Date | 2016-12-17 |
| File Size | 858MB |
| File Type | .zip (Contains .pac file) |
| Flashing Tool | SPD Upgrade Tool |
Warning: Flashing firmware is an advanced process that will completely erase all data on your Hotwav Cosmos V20. You must back up any important files before proceeding. Any errors during the flashing process, such as a power failure or incorrect file, can permanently brick your phone. Please be careful and follow the instructions precisely.
Download Official Firmware for Hotwav Cosmos V20
Here you can download the official stock ROM for the Hotwav Cosmos V20. This package contains the .pac firmware file you will need to restore your device.
📄 Filename: Hotwav_Cosmos_V20_168_20161217_SPD.zip
📦 Size: 858MB
🗓️ Build Date: 2016-12-17
🔢 Build Version: 168_20161217
🤖 Android Version: 6.0 Marshmallow
⬇️ Download Link: Download from MediaFire
How to Flash the Firmware
The Hotwav Cosmos V20 uses a Spreadtrum (UNISOC) processor, so you will need to use the SPD Upgrade Tool on a Windows PC. Here are the five quick steps:
- Download and install the Spreadtrum USB drivers on your computer so that it can recognize your phone.
- Download the firmware from the link above and extract the .pac file from the zip archive.
- Download and run the SPD Upgrade Tool software.
- Click the ‘Load Packet’ button (it looks like a gear) and load the .pac firmware file you just extracted.
- Turn off your phone completely. Click the ‘Start Downloading’ button (the play icon) in the tool, then connect your phone to your computer while holding down the Volume Down button to begin the flash.
If you want to see all the steps with pictures and videos on how to flash the firmware, you should go here to see that: How to Use the SPD Upgrade Tool to Flash Your Smartphone.
Disclaimer: Customise a disclaimer that warns the user that we won’t be responsible if anything happens to the phone in the process of flashing the phone using the firmware files we provided above. That they can drop a comment on the thread if they experience any problems.

![Nokia 3.4 TA-1288 Firmware Flash File Download [Stock Rom] Nokia 3.4 TA-1288](https://www.inarguide.com/wp-content/uploads/2025/04/Nokia-3.4-TA-1288.jpg)
![Oppo Reno 5 Lite CPH2217 Firmware Flash File Download [Stock Rom] Oppo Reno 5 Lite CPH2217 Firmware](https://www.inarguide.com/wp-content/uploads/2025/04/Oppo-Reno-5-Lite-CPH2217-Firmware.jpg)


![Motorola Moto E20 XT2155-3 Firmware Flash File Download [Stock ROM] Motorola Moto E20 XT2155-3](https://www.inarguide.com/wp-content/uploads/2022/01/Motorola-Moto-E20-XT2155-3.jpg)