What My Device

ZTE Obsidian

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Release Date 2015, August. Released 2015, September
OS N/A
Processor Mediatek MT6735M (28 nm)
Battery Li-Ion 1800 mAh, 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
ZTE_Obsidian_Z820_MT6735M_09112016.zip
897 MB
Download 32
ZTE_Obsidian_Z820_MT6735M_MetroPCS_V1.0.zip
876 MB
Download 32
ZTE_Obsidian_Z820_MT6735M_T-MOBILE.zip
900 MB
Download 50
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