ZTE Blade A3 Prime (Z5157V) Firmware Flash File Download [Stock Rom]
The ZTE Blade A3 Prime (model Z5157V) is a budget-friendly smartphone offered by US-based carriers like Visible and Yahoo Mobile. It features a removable battery and runs a clean version of Android 10. If your device is stuck in a bootloop, experiencing persistent software errors, or needs to be restored to its original factory state, flashing the official stock firmware is the best solution.
Important Note: This device is powered by a MediaTek Helio A22 (MT6761) chipset. The restoration process requires the use of SP Flash Tool. This firmware will restore the official US carrier software, including all original applications and any network locks.
Quick Device Specs
- Device: ZTE Blade A3 Prime (Z5157V)
- Release year: 2020
- Chipset: MediaTek Helio A22 (MT6761)
- Display: 5.45″ HD+ IPS LCD
- Battery: 2660 mAh (Removable)
- Memory: 2GB RAM + 32GB storage
- Camera: 8MP rear, 5MP front
- OS: Android 10
- Carriers: USA (Visible, Yahoo Mobile)
Required Downloads
| File / Tool | Download Link |
|---|---|
| SP Flash Tool | Download Tool |
| MediaTek USB VCOM Drivers | Download Drivers |
Stock ROM & Firmware
| Version | Android | Carrier | Type | Download | Size |
|---|---|---|---|---|---|
| V1.0.0B05 | 10 | USA (Visible, etc.) | SP Flash Tool | Download | ~1.4 GB |
Quick Flashing Guide
- Download and install the MediaTek VCOM drivers and the SP Flash Tool on your PC.
- Extract the downloaded firmware ZIP file to find the MT6761_Android_scatter.txt file.
- Launch SP Flash Tool, load the scatter file, and ensure the flashing mode is set to “Download Only.”
- Power off your phone and remove the battery. Click the “Download” button in the tool, then connect the phone (without the battery) to your PC to begin. You can re-insert the battery after the red bar passes.
For a complete, step-by-step tutorial with screenshots, please refer to our definitive guide:
How to Flash Stock Firmware on MediaTek (MTK) Smartphones
FAQs
Q1. Will this firmware remove the carrier lock from my phone?
No. This is the official stock firmware from the carrier. It will restore the original software but will not remove or alter the network lock. The device will remain locked to its original US carrier (e.g., Visible).
Q2. I’m getting a BROM or authentication error in SP Flash Tool. What should I do?
This error can occur on MediaTek chipsets with Secure Boot. The first step is to always ensure your VCOM drivers are correctly installed. If driver issues are ruled out, your device may require an “Auth Bypass” tool to allow flashing. This is an advanced step that involves using a separate tool to disable security before using SP Flash Tool.
Q3. Does the removable battery change the flashing process?
Yes, it can make it easier. A common method for flashing MediaTek devices is to power the phone off, remove the battery, click “Download” in SP Flash Tool, and then connect the phone to the PC. Once the initial connection is made (red bar), you can re-insert the battery to continue the flash.
Q4. What is a “scatter file”?
A scatter file is a text file (.txt) that acts as a map of your phone’s storage. It tells SP Flash Tool the precise location and size of each partition (like system, boot, etc.), ensuring the firmware is written correctly.
Troubleshooting (ZTE Blade A3 Prime)
- SP Flash Tool does not detect the phone: This is the most common issue. Re-install the VCOM drivers, disable Driver Signature Enforcement in Windows if needed, restart your PC, and use a different USB port. The battery pull method described above often helps with detection.
- Error: “PMT changed for the ROM”: This error occurs if the partition layout on your phone doesn’t match the firmware. You can usually fix this by changing the flashing mode in SP Flash Tool from “Download Only” to “Firmware Upgrade”.
- Device is stuck in a bootloop after a successful flash: The first boot can be slow. If it’s still stuck after 15 minutes, boot into recovery mode (hold Volume Up + Power from off) and perform a “Wipe data/factory reset”.
- “Invalid IMEI” after flashing: This can happen if you accidentally use the “Format All + Download” option. To avoid this critical error, always use the “Download Only” mode.
