The Mito Z1 Plus is an affordable Android smartphone for emerging markets, equipped with the Spreadtrum/UNISOC SC9832E chipset, 3GB RAM, a 5.7-inch HD display, and stock Android 8.1 Oreo. Owners often praise its value, but also report major system issues—especially after malware infections, failed updates, or extended heavy use. Common complaints include bootloops at startup, random restarts during daily use, screen lag, and apps freezing. These problems are extremely difficult to fix with a regular factory reset, and only full reinstallation of the factory firmware (.PAC file) via SPD Upgrade Tool reliably restores normal function.
Do not use QFIL or SP Flash Tool; the Mito Z1 Plus requires SPD Upgrade Tool or compatible Unisoc flasher for all firmware operations.
Mito Z1 Plus Firmware Details
The table below provides all technical details necessary for safe firmware restoration with SPD Upgrade Tool.
| Attribute | Details |
|---|---|
| 📱 Device | Mito Z1 Plus |
| 🆔 Chipset | Spreadtrum/Unisoc SC9832E |
| 🤖 Android OS | 8.1 Oreo |
| ✅ Build Version | V09 20190506 |
| 📂 File Type | .PAC file (SPD Firmware) |
| 💻 Flashing Tool | SPD Upgrade Tool (Spreadtrum/Unisoc) |
Download Official Firmware for Mito Z1 Plus (SPD)
- Build: V09 20190506
- File Name: Mito_Z1_Plus_V09_20190506_SPD.zip
- Size: 1.34GB
- 🔗 Download Link: Download (MediaFire)
Why Flash This Specific Firmware?
- Fix Bootloop at Logo / Malware Effects: If your device is stuck on boot, often following malware or unsafe apps, flashing the official.PAC file erases corrupt data and restores the clean OS.
- Unbrick from Failed Updates or Pattern Lock: Users frequently need to flash full firmware to resolve failed mods, update issues, forgotten pattern, or stuck logo problems.
- Repair Random Restarts and System Lag: Community feedback cites frequent reboots and poor responsiveness fixed only by complete firmware restoration.
- Recover Lost Touch Sensitivity & Apps Freezing: Actual users mention touch issues, hang, and app crashes being repaired after flashing the stock ROM.
Crucial Prerequisites Before Flashing
Backup all data and contacts before starting! Flashing erases all user information.
- Latest SPD Upgrade Tool (Windows)
- Official Spreadtrum/Unisoc USB drivers installed
How to Flash the Firmware
- Extract
Mito_Z1_Plus_V09_20190506_SPD.zipto a folder. - Install Spreadtrum USB drivers (from tool installer or manually).
- Open SPD Upgrade Tool.
- Click “Load Packet” and select the folder’s .PAC file.
- Power off the phone; connect via USB while holding Volume Up. For some units, Volume Down may be needed.
- Click “Start Download” (Play icon). Wait for flash to finish and “Passed” message.
- Disconnect, power on, and verify boot-up.
For full illustrated guide, see:
How to Use SPD Upgrade Tool to Flash Your Smartphone (.PAC Firmware)
Disclaimer: Flashing firmware deletes your data and involves risk. Use only official drivers and follow all safety instructions carefully.
