The ZTE Blade Z10 (also known as model A512) is a budget smartphone from 2016, sold primarily by the US carrier AT&T. This page provides an official OTA (Over-The-Air) update package for the device. For owners of this phone, manually installing a software update is a key step to fix common bugs, improve system stability, and resolve errors like the dreaded “dm-verity” corruption message.
Important Note: This is an OTA update package, not a full firmware for unbricking a dead phone. It must be installed on a functioning device. Your phone must also be on 100% stock, un-rooted firmware with the original recovery for the update to install successfully.
Quick Device Specs
- Device
- ZTE Blade Z10 (A512)
- Release year
- 2016
- Chipset
- Qualcomm Snapdragon 425
- Display
- 5.2″ HD IPS LCD (1280×720)
- Battery
- 2540 mAh (Non-removable)
- Memory
- 2GB RAM + 16GB storage
- Camera
- 13MP rear, 8MP front
- OS
- Android 6.0.1 (Marshmallow)
- Carrier
- AT&T (USA)
Required Downloads
You only need the OTA update file itself to perform this installation. No PC or special tools are required.
Stock ROM & Firmware
| Version | Android | Carrier | Type | Download | Size |
|---|---|---|---|---|---|
| V2.0.0 | 6.0.1 (Marshmallow) | AT&T (USA) | OTA | Download | ~1.3 GB |
Quick Installation Guide
There are two methods to install an OTA update package.
- Via Settings Menu: Download the `.zip` file and move it to the main (root) directory of your internal storage. Go to `Settings` > `System` > `System Update`, tap the menu icon in the corner, select `Local update`, and choose the file.
- Via Stock Recovery: Download the `.zip` file and move it to your internal storage or SD card. Power off the phone, then boot into recovery mode (hold Volume Up + Power). Select `Apply update from…` and choose the `.zip` file.
For a complete, step-by-step tutorial with screenshots for both methods, please refer to our definitive guide:
How to Manually Install Official OTA Updates on Android
FAQs
Q1. My phone is stuck at boot with a “dm-verity verification failed” error. Will this OTA fix it?
No. The “dm-verity” error means your system partition is corrupt and the phone cannot boot. Because this is an OTA update, it requires a working phone to be installed. To fix the dm-verity error, you must flash a full factory firmware package using the QFIL tool, not this OTA file.
Q2. Can I remove the AT&T pre-installed apps (bloatware) with this update?
No. This is an official AT&T update, and it will install or update all the original carrier applications. To manage bloatware, you can go to `Settings > Apps` and “Disable” any of the pre-installed apps that you do not use.
Q3. Will this update unlock my phone from the AT&T network?
No. This is an official software update from the carrier. It will not change the phone’s network lock status. The device will remain locked to AT&T.
Device-Specific Troubleshooting
- Battery Draining Faster Than Expected: The Blade Z10 can suffer from battery drain due to the numerous AT&T background services. After installing this update, a `wipe cache partition` from recovery mode can help clear out old files. Also, disabling unused AT&T apps can significantly reduce background power consumption.
- “Unfortunately, AT&T Address Book has stopped” Error: This is a very common bug with this model. This OTA update can resolve it by installing a newer version of the app. If the error persists after the update, go to `Settings > Apps`, find the “AT&T Address Book” app, and clear its cache and data.
- Slow Camera and Blurry Photos: A software update can improve camera processing. If the camera is still slow after the update, ensure you have a fast microSD card set as the default storage location for photos, as writing to slow internal memory can cause lag.
- “Verification Failed” During Installation: This error means your system has been modified (rooted) or you are on a custom software version. This official OTA will only install on a 100% stock, un-rooted AT&T device. You must flash a full QFIL firmware first to restore the phone to its original state.
