HTC Desire 820 dual sim
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
  1. Download the correct ROM file for your device
  2. Install the required flash tool
  3. Enable USB debugging on your device
  4. Boot your device into download mode
  5. Connect your device to computer via USB
  6. Load the ROM file in the flash tool and start flashing
  7. Wait for the process to complete
  8. 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