This page provides the official download link for the Celkon Q599 Ufeel stock ROM, version V02. The Q599 Ufeel was an entry-level smartphone from 2016 that stood out by including a fingerprint sensor, a feature not commonly found in its price range at the time. If your device’s fingerprint sensor is not working, it is stuck in a bootloop, or has been infected with malware, flashing the stock firmware is the most reliable solution. This package contains the original Android 6.0 Marshmallow software in a .pac file format, designed to be installed with the SPD Upgrade Tool on its Spreadtrum chipset.
Reinstalling the firmware will perform a complete wipe of the device, resolving deep-seated software errors and removing all user data and locks. It is the definitive method to unbrick a Celkon Q599 Ufeel and restore it to its original factory condition. Please follow the instructions carefully.
Immediate Local Notice: This flashing process will permanently erase all your personal data (photos, contacts, etc.) from your Celkon Q599 Ufeel.
Celkon Q599 Ufeel: Quick Device Specifications
Please confirm these details match your device to ensure you are using the correct firmware file.
- Device Model:
- Celkon Q599 Ufeel
- Release Date:
- 2016
- Chipset:
- Spreadtrum SC9832 (Quad-core 1.3 GHz)
- Display:
- 5.0 inches, 480 x 854 pixels (FWVGA)
- Battery:
- 2000 mAh, Removable Li-Ion
- RAM/Storage:
- 1GB RAM / 8GB Internal Storage
- Key Features:
- Fingerprint Sensor, 4G VoLTE Support
Required Downloads for Flashing
You will need the following specific tools and drivers for Spreadtrum devices.
- SPD Upgrade Tool
- Spreadtrum USB Drivers
- The Celkon Q599 Ufeel Firmware Package (from the table below)
Celkon Q599 Ufeel Firmware Download Links
| Filename / Version (Build Date) | Android Version | Size | Download Link/s |
|---|---|---|---|
| Celkon_Q599_Ufeel_V02 (Aug 2016) | 6.0 Marshmallow | 893MB | Download (MediaFire) |
How to Flash Celkon Q599 Ufeel Firmware (.pac file)
This is a summary of the flashing process using SPD Upgrade Tool. For a more comprehensive guide with screenshots, please visit our detailed pillar article.
- Preparation: Download the firmware, SPD Upgrade Tool, and Spreadtrum drivers. Extract all zip files into a single folder on your PC.
- Driver Installation: Install the Spreadtrum USB drivers. You may need to restart your computer for them to function correctly.
- Load Firmware: Run
UpgradeDownload.exe. Click the first Gear icon (“Load Packet”) and select the.pacfirmware file you extracted. - Start Flashing: Click the Play button (“Start Downloading”) to prepare the tool for flashing.
- Connect the Phone: Power off your Celkon Q599 Ufeel completely. Press and hold the Volume Down key. While holding the key, connect the phone to your PC via a USB cable.
- Completion: The tool will detect the phone and the flashing will begin. You can release the volume key once the progress bar starts moving. A green “Passed” message will appear when the process is complete. You can now disconnect and power on your phone.
For in-depth instructions and troubleshooting for the SPD Upgrade Tool, please visit our complete guide: How to Use the SPD Upgrade Tool to Flash Your Smartphone.
Troubleshooting Common Issues
Here are some specific issues you might encounter with the Celkon Q599 Ufeel.
1. Fingerprint Sensor Not Working or Unresponsive
Cause: A software glitch, corrupted driver, or a bad system update can cause the fingerprint sensor to stop working, even if the hardware is fine. The option might disappear from settings or fail to recognize any print.
Solution: A full firmware flash is the best way to fix this. It reinstalls the specific firmware for the fingerprint sensor hardware along with all the necessary system drivers, restoring its functionality if the cause was software-related.
2. SPD Upgrade Tool is Stuck or Shows an Error
Cause: Errors like “Failed: Uart send error” or the tool being stuck on “Checking baudrate” are almost always caused by driver issues or an improper connection sequence.
Solution: First, ensure the Spreadtrum drivers are correctly installed. Try a different USB port and cable. Most importantly, follow the connection sequence exactly: click “Start,” then hold the volume key, then connect the phone. If one volume key doesn’t work, try holding Volume Up or both volume keys together.
3. Persistent Malware or Adware
Cause: Entry-level phones can sometimes be targeted by malicious apps that install themselves as system services, making them difficult to remove with a factory reset.
Solution: Flashing the stock .pac firmware is the only guaranteed way to remove such infections. The process completely formats the device storage, wiping out all applications and data—including the malware—and replacing them with a clean, original system image.
Frequently Asked Questions (FAQs)
- Will this firmware remove the FRP (Google Account) lock?
- Yes, in most cases. A full flash using the SPD Upgrade Tool overwrites all device partitions, including the one that stores the FRP lock. This is a common and effective method for bypassing FRP on Spreadtrum devices.
- Why is my phone so slow after flashing?
- The Celkon Q599 Ufeel is an entry-level device with 1GB of RAM. Android 6.0 Marshmallow can be demanding for these specs. A clean flash provides the best possible performance, but to maintain it, you should avoid installing many apps and use lightweight “Go” or “Lite” versions where available.
- My fingerprint sensor stopped working after I tried to update the phone. Will this fix it?
- Yes, it is very likely. A failed or corrupted software update is a common reason for hardware components like the fingerprint scanner to stop working. Flashing this full stock ROM will restore the original, stable drivers and software for the sensor.
- Can I upgrade to a newer version of Android with this file?
- No. This is the official Android 6.0 Marshmallow firmware for the Celkon Q599 Ufeel. It cannot be used to upgrade to a newer Android version.
Conclusion
Restoring the official stock firmware on your Celkon Q599 Ufeel is the most effective method for fixing major software issues, from a non-working fingerprint sensor to a complete bootloop or malware infection. This guide provides the authentic firmware and a reliable flashing method to get your device back into working order. Remember to back up your data before starting, and be mindful of the security limitations of using an older Android version.
If this guide helped you, please share your experience in the comments. Your feedback helps our community!
