The Acer Liquid Zest Plus (model T08) is a mid-range phablet from 2016 designed for endurance and mobile photography. Its standout feature is a massive 5000 mAh battery for multi-day use. It also featured an advanced camera with a unique “tri-focus” system (laser, phase-detect, and contrast-detect autofocus) for fast focusing. Powered by a MediaTek MT6735 processor, this guide provides the official stock ROM to unbrick the device, fix bugs, or perform a complete factory restore.
Important: This firmware is specifically for the Acer Liquid Zest Plus (T08). As a MediaTek device, it requires the SP Flash Tool for flashing. Flashing this on a different model will cause a hard brick. This process will erase all data on your device.
Quick Device Specs
- Device: Acer Liquid Zest Plus (T08)
- Release year: 2016
- Chipset: MediaTek MT6735
- Display: 5.5″ IPS LCD, HD
- Battery: 5000 mAh
- Original OS: Android 6.0 (Marshmallow)
- Key Features: 5000 mAh Battery, “Tri-focus” Camera System
Required Downloads
To flash a MediaTek device, you will need the specific drivers and flashing tool. You can find the downloads for these in our main guide linked below.
- SP Flash Tool
- MediaTek VCOM USB Drivers
Stock ROM (Firmware)
| Region | Build | Android | Type | Download | Chipset |
|---|---|---|---|---|---|
| WorldWide Generic | 1.013.00 | 6.0 | SP Flash Tool Firmware | Download | MediaTek |
How to Flash the Stock Firmware
Flashing the stock ROM onto your Acer Liquid Zest Plus requires a Windows PC and the SP Flash Tool. The process involves installing the MediaTek VCOM drivers, loading the MT6735_Android_scatter.txt file from the firmware into the tool, and then connecting your powered-off phone to start the flash. This will completely restore your device to its original factory software.
For detailed, step-by-step instructions with screenshots and tool download links, please follow our comprehensive pillar guide: How to Flash Firmware with SP Flash Tool.
Device-Specific Troubleshooting for Acer Liquid Zest Plus
- Correct Driver Installation: The most common failure point is incorrect drivers. If the tool doesn’t see your phone, you must install the MediaTek VCOM drivers, which often requires you to disable ‘Driver Signature Enforcement’ in Windows first.
- Using the “Boot Key”: To initiate the flash, power the phone off completely. Press and hold the Volume Down button, and while holding it, connect the phone to your PC. The tool should then detect it and begin the process. If Volume Down doesn’t work, try holding Volume Up.
- Fixing Google FRP Lock: If you’re locked out of your phone by Google’s Factory Reset Protection (FRP), flashing this stock ROM will perform a complete wipe and remove the locked account.
- Camera or Audio Issues: The Zest Plus has a special “tri-focus” camera system and DTS-HD audio. If you are having problems with these features after trying custom software, flashing this official stock ROM is the best way to restore the original, fully functional drivers and software enhancements.
FAQs
Q1. What was the “tri-focus” camera system?
It was Acer’s marketing name for a camera system that combined three autofocus technologies: Phase Detection (PDAF) for speed in good light, Laser Autofocus for fast focusing on nearby subjects in low light, and traditional Contrast Detection for accuracy. The phone would automatically choose the best method for the scene.
Q2. My phone’s battery doesn’t last long anymore. Will this fix it?
Flashing the stock ROM can solve software-related battery drain caused by rogue apps or system bugs. However, as this is an old device, the physical battery has likely degraded with age. If the drain persists after a clean flash, the battery hardware itself is probably the cause and may need replacement.
Q3. What is a “scatter file”?
The scatter file (e.g., MT6735_Android_scatter.txt) is a crucial map for MediaTek firmware. It tells SP Flash Tool the name, size, and location of every partition on the device’s storage, ensuring each part of the software is flashed to the correct place.
Q4. Will this process erase my data?
Yes. Flashing the stock ROM with SP Flash Tool will perform a full factory reset and completely wipe all personal data, apps, and settings from your device.
