This page provides the official download link for the Celkon Diamond Q4G Tab 8 stock ROM. This budget-friendly 8-inch tablet was notable for offering 4G LTE connectivity and voice calling capabilities. If your tablet is stuck on the Celkon logo, has become unusably slow, or is suffering from critical software issues like a null or invalid IMEI, reinstalling the official firmware is the most powerful solution. This package contains the original Android 5.1 Lollipop software for the MediaTek MT6735M-powered device.
Using the SP Flash Tool, this firmware will allow you to perform a complete, clean installation of the operating system. It’s the most reliable method to unbrick a Celkon Diamond Q4G Tab 8, resolve deep-seated software errors, and restore the device to its original factory performance. Please follow the instructions and warnings carefully to ensure a successful process.
User Data Advisory for the Celkon Diamond Q4G Tab 8
Crucial Notice Before Flashing: This procedure will permanently erase all personal data from your tablet, including apps, photos, contacts, and all files on the internal storage. A complete backup is essential. Furthermore, using the wrong settings in the flash tool can corrupt your tablet’s IMEI number, preventing it from connecting to a cellular network. Proceed with caution.
Celkon Diamond Q4G Tab 8: Quick Device Specifications
Please confirm these details match your tablet to ensure you are using the correct firmware file.
- Device Model:
- Celkon Diamond Q4G Tab 8
- Release Date:
- Circa 2016
- Chipset:
- MediaTek MT6735M (Quad-core 1.0 GHz Cortex-A53)
- Display:
- 8.0 inches, 800 x 1280 pixels (HD)
- Battery:
- 4000 mAh, Non-removable Li-Po
- RAM/Storage:
- 1GB RAM / 8GB Internal Storage
- Key Features:
- 4G LTE, Voice Calling Capability, Dual SIM
Required Downloads for Flashing
You will need the following tools and drivers. Download all three components for a successful flash.
- SP Flash Tool (Latest Version)
- MediaTek VCOM USB Drivers
- The Celkon Diamond Q4G Tab 8 Firmware Package (from the table below)
Celkon Diamond Q4G Tab 8 Firmware Download Links
| Filename | Android Version | Size | Download Link/s |
|---|---|---|---|
| Celkon_Diamond_Q4G_Tab_8_MT6735M_…5.1.zip | 5.1 Lollipop | 583MB | Download (MediaFire) |
How to Flash Celkon Diamond Q4G Tab 8 Firmware
This is a summary of the flashing process using SP Flash Tool. For a more comprehensive guide with screenshots, please visit our detailed pillar article.
- Preparation: Download and extract the firmware, SP Flash Tool, and MTK VCOM drivers to a folder on your PC.
- Driver Installation: Install the MediaTek VCOM drivers. You may need to disable driver signature enforcement on modern Windows versions for the drivers to install correctly.
- Load Firmware in Tool: Launch
flash_tool.exe. Click on the “Scatter-loading File” button, navigate to the extracted firmware folder, and select theMT6735M_Android_scatter.txtfile. - Begin Flashing: Make sure the dropdown box is set to “Download Only”. This is critical to protect your IMEI. Never use the “Format All + Download” option. Click the large green “Download” button.
- Connect the Tablet: Power off your Celkon tablet completely. Press and hold the Volume Down button, and while holding it, connect the tablet to the computer with a USB cable. The flashing process will start automatically. Release the button once it begins. A green tick will appear when it is finished.
For in-depth instructions and error solutions for the SP Flash Tool, please visit our complete guide: How to Flash Firmware on MediaTek (MTK) Smartphones.
Troubleshooting Common Issues
Here are some specific issues you might encounter with the Celkon Diamond Q4G Tab 8.
1. “Invalid IMEI” or SIM Card Not Detected
Cause: This is a frequent and serious issue on MediaTek devices that occurs when the NVRAM partition, which stores the tablet’s unique IMEI numbers, is erased or corrupted. This is usually caused by selecting the “Format All + Download” option in SP Flash Tool.
Solution: Always use the “Download Only” mode. If your IMEI is already lost, flashing this firmware will not restore it. You will need to find the original IMEI numbers (often on a sticker on the back of the tablet or on its box) and use advanced tools like Maui META to write them back to the device.
2. Tablet is Extremely Slow and Laggy
Cause: The Celkon Diamond Q4G Tab 8 has very modest hardware specifications (1GB RAM, 1.0 GHz CPU). Over time, with apps and data accumulating, the device can become extremely slow.
Solution: A full firmware flash is the best way to restore the tablet to its original performance level. It removes all junk files and background processes. After flashing, be very selective about the apps you install. Use “Lite” versions of apps like YouTube Go and Facebook Lite to conserve system resources.
3. Tablet Won’t Turn On (Hard Brick)
Cause: A failed update, incorrect file flash, or a critical system error can cause the tablet to become completely unresponsive.
Solution: SP Flash Tool is highly effective at recovering bricked MediaTek devices. As long as your PC can detect the tablet when you plug it in (you may hear a sound, or it may appear briefly in Device Manager), the tool can force-flash the stock ROM and bring it back to life.
Frequently Asked Questions (FAQs)
- Can I make regular phone calls on this tablet?
- Yes. The Celkon Diamond Q4G Tab 8 has voice calling functionality. You can insert a SIM card and use it just like a very large smartphone to make and receive calls.
- Will this firmware update my tablet to Android 6.0 Marshmallow?
- No. This is the official stock firmware for the device, which is based on Android 5.1 Lollipop. It will not upgrade your Android version.
- Why does my tablet only have about 4GB of free space after flashing?
- The device came with only 8GB of total internal storage. A large portion of this (around 3-4GB) is used by the Android operating system and pre-installed apps, leaving only about 4GB for the user. This is normal for this device.
- SP Flash Tool shows an error and won’t flash. What should I do?
- The most common errors (like BROM ERROR) are due to bad drivers. Ensure the VCOM drivers are installed correctly. Also, try a different USB cable and port. Make sure you connect the device only after clicking the “Download” button in the tool.
Conclusion
Restoring the official stock firmware is the most reliable method for fixing major software problems on your Celkon Diamond Q4G Tab 8. Whether you are dealing with a bootloop, a dead device, or a critical IMEI error, this guide provides the necessary files and a clear procedure to get your tablet working again. Always remember to back up your data and be careful with the flashing options.
If this guide was helpful, please share your experience in the comments. Your feedback helps our community!
