The Acer One 7 (model B1-770) is a budget-friendly Android tablet from 2015, designed for everyday media consumption and light productivity. It is equipped with a MediaTek MT8127 processor and originally ran on Android 5.0 Lollipop. This guide provides the official OTA (Over-The-Air) update file to help users manually install software improvements, fix bugs, and enhance system stability.
Important: This is an OTA (Over-The-Air) update, not a full firmware package for unbricking a device. It is intended for a working tablet that can successfully boot into its stock recovery mode. Applying this update will not wipe your personal data, though a backup is always a good safety measure.
Quick Device Specs
- Device: Acer One 7 (B1-770)
- Release year: 2015
- Chipset: MediaTek MT8127
- Display: 7.0″ TFT, 600 x 1024 pixels
- Battery: 2780 mAh
- Original OS: Android 5.0 (Lollipop)
Required Downloads
You will need a microSD card for the simplest installation method. For the ADB Sideload method, you will need the ADB Platform-Tools, which are available for download within our comprehensive guide linked below.
- A microSD Card (for Local Update method)
- ADB & Fastboot Platform-Tools (for ADB Sideload method)
Official OTA Update Package
| Region / Carrier | Build | Type | Download |
|---|---|---|---|
| WorldWide Generic | RV00RC12 | Official OTA Zip | Download |
How to Manually Install OTA Updates
Manually updating your Acer One 7 (B1-770) is straightforward. The recommended method is to copy the downloaded .zip file to the root directory of a microSD card. Then, power off your tablet and boot into recovery mode by holding Power + Volume Up. From the recovery menu, choose “Apply update from SD card” and select the file to begin the installation.
For detailed, step-by-step instructions for both the SD Card and the more advanced ADB Sideload methods, please follow our comprehensive pillar guide: How to Manually Install Official OTA Updates on Android.
Device-Specific Troubleshooting for Acer One 7 (B1-770)
- Firmware is Model-Specific: This firmware is exclusively for the Acer One 7 (B1-770). Do NOT attempt to flash this on any other model like the B1-780 or B1-790. Using the wrong firmware will likely brick your device.
- This is NOT a Version Upgrade: The build number `A50L` indicates this is a maintenance release for Android 5.0 Lollipop. It will fix bugs and improve security on Lollipop but will NOT upgrade your tablet to Android 6.0 Marshmallow or a newer version.
- “Installation aborted” in Recovery: This error typically means your tablet’s current software has been modified (e.g., rooted) or you are not on the correct software version required for this specific patch. You must be on official, unmodified stock firmware to apply an OTA.
- Not a Fix for a Dead Tablet: If your tablet doesn’t turn on at all or can’t boot into recovery mode, this OTA file cannot help you. You will need a full SP Flash Tool firmware package to attempt to unbrick it.
- Poor Performance: With only 1GB of RAM, the B1-770 can feel slow on Android 5.0. After applying this update, it is highly recommended to perform a factory reset from the recovery menu to clear out old data and give the tablet a clean slate, which can significantly improve responsiveness.
FAQs
- Q1. Is this the right file to fix my B1-770 stuck on the Acer screen?
- It might be. If you can still access the stock recovery menu by holding Power + Volume Up, you can attempt to install this OTA file to resolve a bootloop. If you cannot get to recovery, this file will not work.
- Q2. Will this OTA update erase my data?
- No, official OTA updates are designed to install over your existing data without wiping it. However, backing up important files beforehand is always a smart practice.
- Q3. Will this upgrade my tablet to Android 6.0 Marshmallow?
- No. This is an official maintenance and security update for the existing Android 5.0 Lollipop operating system on the B1-770. It does not upgrade the Android version.
- Q4. Why can’t I install the update from my SD card?
- Ensure the
.zipfile is not inside any folders on the microSD card and that it was downloaded completely without corruption. If it still fails, it’s likely due to the “Installation aborted” issue mentioned in the troubleshooting section above (your system has been modified).
