The Acer One 8 (model T9-422L) is a modern, compact tablet featuring an 8.7-inch HD display and 4G LTE connectivity. It is powered by a MediaTek MT6765 octa-core processor and runs on Android 12 or newer, making it a capable device for media consumption and on-the-go tasks. This guide provides the official stock firmware package for the tablet.
This is a complete firmware package designed for installation via the SP Flash Tool. It allows for a full restoration of the tablet’s software, which is the perfect solution for unbricking a device, fixing a bootloop (stuck on the Acer logo), or removing stubborn software errors and bloatware.
Disclaimer: The process of flashing stock firmware will completely erase all data from your tablet’s internal storage, including any apps, photos, videos, and personal files. Please back up your important data before proceeding if you have access to the device.
Quick Device Specs
- Device: Acer One 8 (T9-422L)
- Release year: 2022
- Chipset: MediaTek MT6765
- Display: 8.7″ IPS LCD, 800 x 1340 pixels
- RAM/Storage: 3GB/32GB
- Battery: 5100 mAh
- Original OS: Android 12
Required Downloads
To flash this firmware, you will need the SP Flash Tool program and the correct MediaTek VCOM USB drivers installed on your Windows computer. You can find secure download links for these utilities in our comprehensive guide, which is linked in the how-to section below.
- The firmware package from the table below
- SP Flash Tool
- MediaTek VCOM USB Drivers
Official Stock Firmware (ROM)
| Build Date | Chipset | Type | Download |
|---|---|---|---|
| 2024-07-17 | MT6765 | Stock ROM (SP Flash Tool) | Download |
How to Flash Stock Firmware
To restore the software on your Acer One 8 tablet, you will use the SP Flash Tool on a PC. First, ensure the MediaTek VCOM drivers are correctly installed. Extract the firmware zip file, then launch the SP Flash Tool. Load the scatter file (e.g., MT6765_Android_scatter.txt) from the extracted firmware directory. Ensure the flashing mode is set to “Download Only,” then click the “Download” button. Finally, power off your tablet completely and connect it to the computer via a USB-C cable to start the flashing process automatically.
For a complete, step-by-step walkthrough, driver downloads, and troubleshooting, please refer to our detailed pillar guide: How to Flash Stock Firmware with SP Flash Tool.
Device-Specific Troubleshooting for Acer One 8 (T9-422L)
- Driver Installation is Key: The most common failure point is the PC not detecting the tablet. This is a driver issue. Uninstall any previous mobile drivers from your PC, restart, and install the VCOM drivers. The device should appear briefly in Windows Device Manager as “MediaTek PreLoader USB VCOM Port” when connected correctly.
- “PMT changed for the ROM” Error: This error in SP Flash Tool means the partition map of the firmware differs from what’s on your device. To solve this, change the flashing option in the tool’s dropdown box from “Download Only” to “Firmware Upgrade” and try again.
- Restoring a Government or Institutional Tablet: Some of these tablets were distributed for specific programs and may have restricted software. Flashing this stock firmware is an effective way to remove such restrictions and restore a standard Android environment.
- Unresponsive Screen or Touch Issues: If your tablet’s display is unresponsive or behaving erratically, a software re-flash should be your first step before considering a hardware repair, as corrupted drivers or system files can often cause these problems.
FAQs
- Q1. My Acer One 8 is completely dead and won’t charge or turn on. Can this fix it?
- If the issue is due to a software crash or “hard brick,” then yes, this firmware and the SP Flash Tool method is the correct procedure to revive it. If the cause is hardware failure, this will not work.
- Q2. Will this process erase my data?
- Yes, absolutely. This is a clean installation that will format the tablet’s entire internal storage, deleting all personal files, apps, and photos.
- Q3. What is a scatter file?
- The scatter file is a crucial text file inside the firmware folder. It tells the SP Flash Tool the memory layout of the device, ensuring each part of the Android system is written to the correct partition.
- Q4. Will this remove the Google Account Lock (FRP)?
- No. While this ROM restores the operating system, it does not bypass Factory Reset Protection (FRP). After flashing, you will still need to enter the login details of the last Google account that was synced to the tablet to complete the setup.
