Release Date
2014, September. Released 2014, November
OS
N/A
Processor
Qualcomm MSM8939 Snapdragon 615 (28 nm)
Battery
Li-Po 2600 mAh, non-removable
⚠️ Important Notice
Flashing firmware can be risky. Follow instructions carefully and backup your data before proceeding. We are not responsible for any damage to your device.
Available Firmware Files
| File Name | Size | Download |
|---|---|---|
|
HTC_Desire_D820US_V1.22.1403.3_Radio_LLDMC15.2.1_MT6752.zip
|
762 MB | |
|
HTC_Desire_D820U_Clone_MT6582_151009.zip
|
440 MB |
How to Flash Stock ROM
- Download the correct ROM file for your device
- Install the required flash tool
- Enable USB debugging on your device
- Boot your device into download mode
- Connect your device to computer via USB
- Load the ROM file in the flash tool and start flashing
- Wait for the process to complete
- Reboot your device
Precautions
- Backup all important data before flashing
- Ensure battery is at least 50% charged
- Use original USB cable for stable connection
- Don't disconnect during flashing process
- Download ROM only for your specific model
- Follow manufacturer's instructions carefully