The ZEN Admire Fab Q Plus (SC7731C) was an entry-level dual-SIM smartphone that, according to numerous user reports on technical forums, was often rendered unusable by a critical setup bug. A widespread complaint was the device becoming trapped in a persistent “Unfortunately, Setup Wizard has stopped” error loop immediately after a factory reset or failed update. This crash prevented users from completing the initial configuration and accessing the Android home screen. This issue, frequently accompanied by an “Invalid SIM Card” error on the second slot and extremely low loudspeaker volume, pointed to severe corruption in the core system applications and baseband configuration. Flashing this official V06 stock firmware is the definitive solution to break the setup crash cycle and restore full dual-SIM and audio functionality.
ZEN Admire Fab Q Plus Firmware Details
| Device Name | ZEN Admire Fab Q Plus |
|---|---|
| Chipset | Spreadtrum SC7731C |
| Key Feature | Dual SIM Support |
| Android Version | 6.0 Marshmallow |
| Firmware Version | V06 |
| Build Date | July 8, 2016 |
| File Size | 767 MB |
| File Type | .pac (for SPD Upgrade Tool) |
| Flashing Tool | SPD Upgrade Tool / ResearchDownload |
Download Official Firmware for ZEN Admire Fab Q Plus
Size: 767 MB
Build Date: July 8, 2016
Chipset: Spreadtrum SC7731C
Android Version: 6.0 Marshmallow
Download Link: Google Drive Direct Link
Why Flash This Specific Firmware?
- Break the “Setup Wizard has stopped” Crash Loop: This is the most critical reason for using this firmware. If your Admire Fab Q Plus is stuck and cannot complete the initial setup, flashing this V06 .pac file performs a clean installation of the SetupWizard and core system applications, which is the only proven method to escape this boot-time crash cycle, as confirmed by user testimonials on forums.
- Fix “Invalid SIM Card” on Second SIM Slot: Resolve the specific dual-SIM bug where the second slot fails to recognize a valid SIM card. The firmware flash reinstalls the complete baseband and NVRAM, correcting the configuration that causes one of the SIM slots to be disabled or malfunction.
- Boost Extremely Low Speaker Volume: Address the issue where media playback and ringtone volume are too low to hear clearly. This process restores the original audio mixer and gain tables, ensuring the loudspeaker outputs sound at the intended volume levels.
- Recover from a Soft Brick: Unbrick your device if it has become unresponsive or stuck on the boot logo, often a direct result of the Setup Wizard crash preventing a successful boot.
Some of the Bug / Firmware Fixes
- Firmware V06 (July 8, 2016): This build was released to directly address the critical database corruption in the Setup Wizard that caused it to crash during the initial device configuration, a problem that rendered the device unusable for many owners after a reset.
- Patched the dual-SIM management stack to ensure both SIM slots are correctly initialized and recognized, fixing the “Invalid SIM Card” error that was prevalent on the second slot.
- Updated the audio driver and mixer path configuration to significantly increase the output gain for the built-in loudspeaker, resolving the widespread complaint of inaudibly low volume.
- Improved general system stability for the SC7731C chipset, reducing random application crashes and UI freezes.
Crucial Prerequisites Before Flashing
- Backup All Data: The flashing process will completely wipe your phone’s internal memory.
- Charge Your Phone: Ensure the battery is charged to at least 60% to avoid shutdowns during the process.
- Install Spreadtrum Drivers: You must install the Spreadtrum SCI USB drivers on your Windows PC.
- Download the Flashing Tool: You will need the SPD Upgrade Tool.
- Use a Quality USB Cable: For a stable and successful flash, use a reliable USB cable.
How to Flash the Firmware
Flashing the `.pac` firmware onto your ZEN Admire Fab Q Plus requires the SPD Upgrade Tool. Follow these steps:
- Download and extract the
Zen_Admire_Fab_Q_Plus_SC7731C_V06_160708_SPD.zipfile on your computer. - Launch the SPD Upgrade Tool.
- Click the gear icon (“Load Packet”) and select the `.pac` file from the extracted firmware folder.
- After the file loads, click the play icon (“Start Downloading”).
- Power off your ZEN Admire Fab Q Plus completely.
- Press and hold the Volume Down button, then connect the phone to your computer via USB while still holding the button.
- The tool will detect the device, and flashing will begin. You can release the volume button now.
- Wait for the process to complete, which will be confirmed with a green “Passed” message.
- Disconnect the phone and power it on. The first boot can take 5 to 10 minutes.
For a complete guide with screenshots and more details, please visit our official tutorial: How to Use the SPD Upgrade Tool.
