The Mobicel Rio RW is an affordable Android phone with a Spreadtrum/Unisoc SP7731E chipset and Android 8.1 OS. Like most SPD-based entry smartphones, it is vulnerable to software failures—especially after failed updates, mishandling, or malware infection. Common problems include endless bootloops, being stuck on the Mobicel logo, or the device going totally dead after a flashing interruption.
In these situations, a full ROM reinstallation is the gold-standard repair. This guide gives you the official Mobicel Rio RW firmware in .pac format, ready for use with the SPD Upgrade Tool (ResearchDownload).
Mobicel Rio RW Firmware Details
| Attribute | Details |
|---|---|
| 📱 Device | Mobicel Rio RW |
| 🆔 Chipset | Spreadtrum SP7731E |
| 🤖 Android OS | 8.1.0 |
| ✅ Build Version | 171019_MIRA |
| 📂 File Type | PAC Firmware |
| 💻 Flashing Tool | SPD Upgrade Tool / ResearchDownload |
Download Official Firmware for Mobicel Rio RW
- Build: 171019_MIRA
- File Name: Mobicel_Rio_RW_SP7731E_171019_8.1.0_MIRA.zip
- Size: 798MB
- 🔗 Download Link: Download (Google Drive)
Why Flash This Specific Firmware?
- Fix Bootloop/Logo Hang: This firmware is the main fix if your Rio RW is stuck in a bootloop or freezes at the Mobicel logo after an update, reset, or improper flash.
- Unbrick a Dead or “Not Detected” Mobicel: If your phone is totally unresponsive after a failed flashing attempt or update, flashing this PAC ROM via SPD Upgrade Tool can recover it—even when a hard reset or fastboot is impossible.
- Stop Persistent Ads & Malicious Apps: System-level malware and pop-up ads that survive a factory reset can only be completely erased with a clean ROM flash.
- IMEI or Network Issues: Network or IMEI errors, no service, or unreliable connectivity often result from system corruption, which this full firmware installation repairs.
Crucial Prerequisites Before Flashing
- The latest SPD Upgrade Tool
- Install all required Spreadtrum USB drivers on Windows
Always back up your data as flashing will erase all phone content.
How to Flash the Firmware
- Extract
Mobicel_Rio_RW_SP7731E_171019_8.1.0_MIRA.zipto get the.pac file. - Install Spreadtrum drivers if not already done.
- Launch SPD Upgrade Tool, click the gear icon, and select the firmware.pac file.
- Click “Start Downloading” and plug in the phone (usually powered off, holding Volume Down).
See the full illustrated guide for every step:
→ How to Use the SPD Upgrade Tool to Flash Your Smartphone
Disclaimer: Flashed wrongly, this process can brick your device forever. Use only if sure this is the correct ROM for your model. Not responsible for loss or permanent damage.
