The ZTE Blade A315 is an entry-level 3G smartphone designed for the Telcel Mexico carrier network. It provides basic functionality for essential communication, powered by a MediaTek processor and running Android 5.1 Lollipop. This guide provides an official OTA (Over-The-Air) update package for users who need to manually update their device to fix software bugs, improve stability, or restore the original carrier software.
Important: This is an OTA update file, not a full unbrick package. It is designed for updating a functioning phone that can boot into recovery mode. This process will not wipe your data, but a backup is always highly recommended before any software installation.
Quick Device Specs
- Device: ZTE Blade A315
- Release year: 2016
- Chipset: MediaTek MT6735M
- Display: 5.0″ TFT Display
- Battery: 2000 mAh
- Original OS: Android 5.1 (Lollipop)
Required Downloads
For the advanced ADB Sideload method, you will need the official ADB tools. You can find the downloads for this in our main guide linked below.
- ADB & Fastboot Platform-Tools (for ADB Sideload method)
- A microSD Card (for Local Update method)
Official OTA Update Package
| Region / Carrier | Android | Type | Download |
|---|---|---|---|
| Mexico (Telcel) | 5.1 | Official OTA Zip | Download |
How to Manually Install OTA Updates
Manually installing an OTA update on your ZTE Blade A315 is a simple process for a working phone. The easiest method is to place the downloaded OTA .zip file onto a microSD card, then boot into the phone’s stock recovery mode and select the “Apply update from SD card” option. This will install the official update without erasing your data.
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 ZTE Blade A315
- “Update Verification Failed” or “Installation aborted”: This is the most common error. This OTA package is specifically for the Telcel Mexico variant. It will fail to install on a device from any other carrier or region. It will also fail if your system has been modified (e.g., rooted).
- This is NOT an Unbrick File: An OTA
.zipfile is designed to update a phone that can boot into its recovery mode. If your phone is hard-bricked (won’t turn on), you need a different type of firmware (a full SP Flash Tool package) and a different flashing method. This file will not fix a dead device. - Performance After Update: If your phone is still slow after the update, a factory reset from the recovery menu is highly recommended. This clears out old system files and can greatly improve performance on older devices with limited RAM. Remember to back up your data first.
- Insufficient Storage Error: This device has very limited internal storage. The update will fail if there isn’t enough free room for the system to download and unpack the update file. Using the recommended SD card method is the best way to avoid this problem.
FAQs
Q1. Will this update erase my photos and contacts?
No, a standard OTA update does not wipe your personal data. However, it is always a good practice to back up important files before any software update, just in case.
Q2. Will this remove the Telcel apps from my phone?
No. This is an official Telcel firmware update. It will restore or update all original Telcel branding and pre-installed applications (bloatware).
Q3. Do I need to unlock the bootloader to install this update?
No, official OTA files are signed by the manufacturer and can be installed on a device with a locked bootloader using the stock recovery.
Q4. My phone is stuck on the Telcel logo. Can I use this file?
Maybe. If you can still boot your phone into recovery mode (by holding Power + Volume Up), you can attempt to flash this OTA file. If you cannot get to recovery mode, then your phone is likely bricked and you will need a full unbrick ROM and a different flashing method (SP Flash Tool).
