Ezviz Downgrade | Firmware

Downgrading firmware on EZVIZ devices isn't officially supported through the app, but it is entirely possible if you use the right tools. This comprehensive guide will walk you through why you might need to downgrade, the risks involved, and a step-by-step tutorial on how to safely flash an older firmware version. Why Downgrade EZVIZ Firmware?

The camera’s status LED should start flashing red/blue or amber, indicating it is reading the file and flashing the storage. Leave it completely alone for 5 to 10 minutes until it automatically reboots and speaks its startup prompt. Troubleshooting Common Issues ezviz downgrade firmware

If the camera seems "bricked," you may need to find a physical reset button and hold it down for 15-20 seconds while powered on to factory default it, then try the upgrade again. The camera’s status LED should start flashing red/blue

: Official notices (e.g., for CVE-2023-48121 ) explain that authentication bypass flaws were patched in v5.3.x, making downgrades to earlier versions a high security risk. Key Risks : Official notices (e

Firmware files usually have extensions like .dav , .bin , or .img . Ensure the file is specifically for your exact model number (e.g., CS-CV310-A0-32W2F). Flashing the wrong firmware will brick the camera.

Look for a folder named config . Inside, open the AppConfig.ini file using Notepad.