Q1. My Aquaris X5 has terrible battery life. Will this firmware fix it?

This is a widely reported issue, often caused by unofficial ROMs or software degradation. Flashing this official Cyanogen OS firmware will perform a clean installation, removing any software bugs causing excessive battery drain and restoring the original, highly optimized power management settings the device was known for.

Q2. Can I use this to update my phone to Android 7.0 or newer?

No. This is the last official firmware released by Cyanogen Inc. for this device. It is based on Android 6.0.1. Upgrading to a newer Android version would require installing a custom ROM like LineageOS, which is a different process.

Q3. The GPS on my phone is very slow to get a location lock. Can this be fixed?

Yes, it often can. GPS issues are frequently caused by corrupted AGPS data or misconfigured system files. A clean firmware flash restores all the original location and modem configuration files, which can significantly improve the speed and accuracy of the GPS lock.

BQ Aquaris X5 Cyanogen Edition Firmware (Stock ROM)

The BQ Aquaris X5 Cyanogen Edition was a notable smartphone from 2015, born from a partnership between Spanish manufacturer BQ and Cyanogen Inc. It shipped with Cyanogen OS 12.1 (based on Android 5.1) and was later updated to Cyanogen OS 13 (based on Android 6.0.1 Marshmallow). The device was praised for its premium design, excellent battery life, and the customization options offered by Cyanogen OS. However, following the shutdown of Cyanogen Inc., users were left without an official update path. Common issues reported over the years include battery drain, GPS lock problems, and bugs that arose after unofficial updates. Reinstalling the official stock Cyanogen OS firmware is the definitive way to restore the device to its original, stable, and intended software state.

⚠️ CRUCIAL WARNING: Advanced Flashing Method
This device uses the Fastboot method for flashing, which is different from QFIL or SP Flash Tool. This procedure requires an unlocked bootloader and will completely erase all your personal data. This guide restores the phone to its original factory Cyanogen OS; it is not an upgrade to a newer Android version.

⚠️ Prerequisites: Before You Begin

Click Here for the Essential Pre-Flashing Checklist

Backup Your Data: This process will wipe everything on your phone’s internal storage.
Charge The Battery: Ensure your phone has at least a 60% charge to prevent it from shutting down during the process.
Windows PC & USB Cable: You will need a Windows computer and the phone’s original micro USB cable.
Unlock Bootloader: Your device’s bootloader must be unlocked to flash firmware via Fastboot.

📱 Quick Device Specifications

Device: BQ Aquaris X5 (Cyanogen Edition)
Chipset: Qualcomm Snapdragon 412 (MSM8916T)
Display: 5.0″ HD IPS (1280×720)
Operating System: Cyanogen OS 13.1 (based on Android 6.0.1)
RAM: 2GB / 3GB
Storage: 16GB / 32GB
Battery: 2900 mAh

🛠 Required Tools & Downloads

File / Tool	Download Link
ADB and Fastboot Platform Tools	Download from Google
Qualcomm HS-USB QDLoader Drivers	Download Drivers

⬇️ BQ Aquaris X5 Cyanogen Edition Stock ROM / Firmware

OS Version	Build Number	Chipset	Download Link
Cyanogen OS 13.1.4	ZNH2KAS5FE	Qualcomm Snapdragon 412	Download (MediaFire)

Quick Steps to Flash BQ Aquaris X5 Cyanogen Firmware

Download and install the Qualcomm drivers. Download and extract the ADB/Fastboot Platform Tools and the firmware ZIP file (BQ_Aquaris_X5_Cyanogen_...ZNH2KAS5FE.zip) into the same folder.
Power off your phone completely. Reboot it into Fastboot Mode by pressing and holding the Power + Volume Down buttons simultaneously until you see the Fastboot menu.
Connect your phone to your PC via USB cable.
Inside the folder where you extracted the files, find the `flash-all.bat` script. Double-click this file to run it.
A command prompt window will open and the flashing process will begin automatically. Do not unplug the phone or close the window.
The script will flash all the necessary partitions and the phone will reboot automatically once the process is complete.

❓ Frequently Asked Questions (FAQs)

Q1. My Aquaris X5 has terrible battery life. Will this firmware fix it?: This is a widely reported issue, often caused by unofficial ROMs or software degradation. Flashing this official Cyanogen OS firmware will perform a clean installation, removing any software bugs causing excessive battery drain and restoring the original, highly optimized power management settings the device was known for.
Q2. Can I use this to update my phone to Android 7.0 or newer?: No. This is the last official firmware released by Cyanogen Inc. for this device. It is based on Android 6.0.1. Upgrading to a newer Android version would require installing a custom ROM like LineageOS, which is a different process.
Q3. The GPS on my phone is very slow to get a location lock. Can this be fixed?: Yes, it often can. GPS issues are frequently caused by corrupted AGPS data or misconfigured system files. A clean firmware flash restores all the original location and modem configuration files, which can significantly improve the speed and accuracy of the GPS lock.

🔧 Device Troubleshooting

The `flash-all.bat` script gives an error or closes immediately: This usually means Fastboot is not set up correctly. Ensure that the ADB/Fastboot tools and all the extracted firmware files (especially the `.img` files) are in the exact same folder as the script. Also, verify your phone is properly connected in Fastboot mode.
After flashing, the phone is stuck on the Cyanogen boot animation: The first boot can take a very long time (up to 20 minutes). Be patient. If it is still stuck, you need to perform a factory reset. Boot into recovery mode (Power + Volume Up), then navigate to “Wipe data/factory reset” and confirm.
My phone is not detected in Fastboot mode: This is a driver issue. Ensure you have installed the Qualcomm drivers correctly. You may need to disable Windows Driver Signature Enforcement. You can check if the device is recognized by opening a command prompt in your Fastboot folder and typing `fastboot devices`. If it shows a serial number, you are connected.