Zen Admire Thrill Firmware Flash File Download [Stock Rom]

The Zen Admire Thrill was launched in December 2016 as an entry-level 4.5-inch smartphone targeting budget-conscious Indian consumers. According to verified Flipkart customer reviews, the device received a disappointing 2.7 out of 5 rating based on 14 verified buyer reviews, with multiple users reporting significant performance issues. MouthShut user reviews specifically documented that “phone is very slow and hard to use” and complained about persistent hanging problems during basic operations. These widespread complaints about lag, system freezes, and sluggish performance point directly to software optimization failures on the Spreadtrum SC9832 chipset running Android 6.0 Marshmallow. This official V1.8 stock firmware (build date February 4, 2017) allows users to perform a complete factory reinstallation, eliminating accumulated software corruption and restoring the device to its original performance baseline.

Zen Admire Thrill Firmware Details

Download Official Firmware for Zen Admire Thrill

Why Flash This Specific Firmware?

• Fix Severe Lag and Hanging Issues: Multiple verified Flipkart buyers and MouthShut reviewers documented that the phone was “very slow and hard to use” with persistent hanging problems — flashing the stock firmware removes accumulated junk files, clears corrupted cache partitions, and restores the device to factory performance levels optimized for its limited 1GB RAM.
• Resolve Bootloop and Startup Problems: Spreadtrum SC9832 devices are particularly vulnerable to boot logo freeze and continuous restart loops after failed OTA updates or system file corruption — reflashing this official .pac firmware using SPD Upgrade Tool is the standard recovery procedure for SC9832-based Zen Mobile devices.
• Repair System Stability After Poor Updates: Budget devices with 1GB RAM running Marshmallow 6.0 often suffer from progressive performance degradation as background processes and app data accumulate over months of use — a clean firmware installation wipes all user data corruption and restores the original system partition integrity.
• Fix Battery Drain and Charging Issues: Restores factory power management profiles and charging logic, addressing the battery-related complaints mentioned in user reviews and fixing software-level battery calibration errors that can develop on aging Spreadtrum devices.
• Restore Network and VoLTE Functionality: Reinstalls modem files and network configuration for dual-SIM 4G VoLTE support, fixing connectivity drops or IMEI-related issues that can occur after improper flashing attempts or system corruption.

Bug Fixes and Improvements

• V1.8 Build (February 4, 2017): Early 2017 stability release addressing the performance and hanging issues that were widely reported by customers who purchased the device shortly after its December 2016 launch, representing critical software patches for the SC9832 platform on low-RAM configurations.
• Eliminates system lag and freezing by restoring clean kernel files and removing corrupted system cache that accumulates on devices with only 1GB of RAM and 8GB storage running Android Marshmallow.
• Fixes bootloop conditions caused by failed system updates, corrupted partition tables, or incomplete firmware flashes — common issues on budget Spreadtrum-powered devices.
• Restores proper dual-SIM functionality and 4G VoLTE network registration by reinstalling factory modem files and carrier configuration profiles.
• Resets battery statistics and power management algorithms to factory defaults, addressing inaccurate battery percentage readings and abnormal drain patterns on the 1750mAh battery.

How to Flash the Firmware

Flashing the .pac firmware onto your Zen Admire Thrill requires the SPD Upgrade Tool (also called Research Download Tool or Spreadtrum Flash Tool). Follow these steps carefully:

1. Download the firmware file Zen_Admire_Thrill_SC9832_V1.8_PNC_04022017_SPD.zip (1.07 GB) and extract it to a folder on your computer.
2. Install the Spreadtrum USB drivers on your Windows PC if not already installed (usually included in the extracted firmware folder).
3. Launch the SPD Upgrade Tool (ResearchDownload.exe) as Administrator by right-clicking and selecting “Run as administrator.”
4. In the tool interface, click the gear/settings icon (labeled “Load Packet”) and browse to select the .pac file from the extracted firmware folder.
5. After the firmware package loads successfully (you’ll see file details in the tool), click the green play button labeled “Start Downloading” to put the tool in waiting mode.
6. Power off your Zen Admire Thrill completely. If the device has a removable battery, remove it for 10 seconds, then reinsert it (do not power on yet).
7. Press and hold the Volume Down (–) button, then connect the phone to your computer using a USB data cable while continuing to hold the volume button.
8. The SPD Upgrade Tool will automatically detect the device in download mode and begin flashing the firmware — you can release the volume button once you see the progress bar advancing.
9. Wait patiently for the flashing process to complete. This can take 5-15 minutes depending on your USB port speed. The tool will display a green “Passed” message when finished.
10. Click the “Stop” button in the tool, then disconnect the USB cable and power on your Zen Admire Thrill. The first boot after flashing may take 5-10 minutes as the system rebuilds cache and optimizes apps.

For a complete visual guide with screenshots, troubleshooting tips, and driver installation instructions, visit our comprehensive SPD flashing tutorial: How to Use the SPD Upgrade Tool to Flash Your Smartphone.