The ZTE Blade L4 Pro, also known in some regions as the ZTE E7L, is an ultra-budget smartphone from 2015 designed for essential daily tasks. It features a 5.0-inch display and is powered by a MediaTek MT6735 processor running Android 5.1 Lollipop. This guide provides the official stock ROM, which is essential for unbricking the device, fixing software bugs, or removing a Google FRP lock by performing a complete factory restore.
Important: This firmware is specifically for the ZTE Blade L4 Pro. As a MediaTek device, it requires the SP Flash Tool for flashing. Flashing this on a different model will cause a hard brick. This process will erase all data on your device.
Quick Device Specs
- Device: ZTE Blade L4 Pro / E7L
- Release year: 2015
- Chipset: MediaTek MT6735
- Display: 5.0″ TFT Display
- Battery: 2200 mAh
- Original OS: Android 5.1 (Lollipop)
Required Downloads
To flash a MediaTek device, you will need the specific drivers and flashing tool. You can find the downloads for these in our main guide linked below.
- SP Flash Tool
- MediaTek VCOM USB Drivers
Stock ROM (Firmware)
| Build Date | Android | Type | Download | Chipset |
|---|---|---|---|---|
| 2015-09-07 | 5.1 | SP Flash Tool Firmware | Download | MediaTek |
How to Flash the Stock Firmware
Flashing the stock ROM onto your ZTE Blade L4 Pro requires a Windows PC and the SP Flash Tool. The process involves installing the MediaTek VCOM drivers, loading the MT6735_Android_scatter.txt file from the firmware into the tool, and then connecting your powered-off phone to start the flash. This will completely restore your device to its original factory software.
For detailed, step-by-step instructions with screenshots and tool download links, please follow our comprehensive pillar guide: How to Flash Firmware with SP Flash Tool.
Device-Specific Troubleshooting for ZTE Blade L4 Pro
- Correct Driver Installation: The most common failure point is incorrect drivers. If the tool doesn’t see your phone, you must install the MediaTek VCOM drivers, which often requires you to disable ‘Driver Signature Enforcement’ in Windows first.
- Using the “Boot Key”: To initiate the flash, power the phone off completely. Press and hold the Volume Down button, and while holding it, connect the phone to your PC. The tool should then detect it and begin the process. If Volume Down doesn’t work, try holding Volume Up.
- Fixing Google FRP Lock: If you’re locked out of your phone by Google’s Factory Reset Protection (FRP), flashing this stock ROM will perform a complete wipe and remove the locked account.
- Safer Flashing (Uncheck Preloader): For a safer flashing process that is less likely to cause a hard brick, it is highly recommended to uncheck the `preloader` partition in SP Flash Tool before clicking Download. Flashing an incorrect preloader is the most common cause of a permanently dead phone.
FAQs
Q1. Is the ZTE Blade L4 Pro the same as the ZTE E7L?
Yes. For marketing purposes, ZTE often releases the same device under different names in different regions. The ZTE Blade L4 Pro and the ZTE E7L share the same hardware and can use the same stock firmware.
Q2. My phone is very slow and stuck on the ZTE logo. Will this fix it?
Yes. Both extreme slowness (due to age and low RAM) and being stuck on the logo (a “bootloop”) are software-related problems. A clean flash of the stock ROM is the most effective way to resolve these issues by completely reinstalling the operating system.
Q3. Will this unlock my phone from its network carrier?
No. Flashing stock firmware does not remove a SIM lock. The device will remain locked to its original carrier.
Q4. What is a “scatter file”?
The scatter file (e.g., MT6735_Android_scatter.txt) is a crucial map for MediaTek firmware. It tells SP Flash Tool the name, size, and location of every partition on the device’s storage, ensuring each part of the software is flashed to the correct place.
