The Hotwav Cosmos V6 Plus has left many users frustrated due to chronic system hanging, black screens, frequent app crashes, random bootloops, and unresponsive touch issues. Numerous complaints also cite slow performance and difficulty powering on after software glitches or failed updates. Flashing the official SPD firmware unbricks dead phones, cures stubborn “app stopped” errors, restores missing features, and helps the V6 Plus run smoother and more reliably.
Hotwav Cosmos V6 Plus Firmware Details
| Device Name | Hotwav Cosmos V6 Plus |
|---|---|
| Model | Cosmos V6 Plus |
| Chipset | Spreadtrum/Unisoc (SPD S7358) |
| CPU | Quad-core, up to 1.3 GHz |
| GPU | ARM Mali-400 MP2 |
| RAM | 1 GB |
| Storage | 8 GB (expandable microSD) |
| Display | 5.0″ FWVGA (854×480) |
| Main Camera | 8 MP |
| Front Camera | 5 MP |
| Battery | 3000 mAh (removable) |
| Android Version | 5.1 Lollipop |
| Firmware Version | S7358_5.1_SPD |
| File Size | 608 MB |
| File Type | ZIP (includes SPD .pac file) |
| Flashing Tool | SPD Upgrade Tool |
Warning: Flashing with the wrong ROM or losing power during the process may permanently damage your V6 Plus or erase all files. Always verify your model and back up all important files.
Download Official Firmware for Hotwav Cosmos V6 Plus
This is the original SPD firmware for Hotwav Cosmos V6 Plus S7358. Flashing this will fix system hangs, black screens, dead devices, slowdowns, and major software malfunctions. Only use this file on V6 Plus S7358—not for other models!
📄 Filename: Hotwav_Cosmos_V6_Plus_S7358_5.1_SPD.zip
📦 Size: 608 MB
🤖 Android Version: 5.1 Lollipop
⬇️ Download Link: Download from MediaFire
How to Flash the Firmware
- Download and extract the ZIP to your PC.
- Install SPD Upgrade Tool & Spreadtrum USB drivers.
- Load the .pac file from the firmware in the tool.
- Connect the turned-off V6 Plus via USB and click “Start”.
- Wait for a successful flash, then restart your device.
Want step-by-step visuals and full instructions? See the Cosmos V6 Plus SPD flashing guide here.
Disclaimer: Flashing is risky. We are not responsible for lost data or device damage. Drop a comment if you need help!

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