Press and hold the on the TV (not the remote) and then turn on the main power switch.

Once you have successfully downloaded all parts (including part04) and extracted the final firmware file, follow these steps to install it:

If your TV is still functional and connected to the internet, you can check for official updates without manual files:

Wait for the "Software Upgrading" or "Do not turn off" progress bar to appear.

Searching for the specific file typically indicates a need for a manual firmware update via USB for an Onida 55-inch LED TV. These files are often split into multiple compressed parts (part01, part02, etc.) that must all be downloaded to the same folder and extracted together to form a single .bin or .img firmware file. Where to Find the Software

For some regions, SmartTech TV Downloads provides a model search for firmware packages. USB Installation Steps

Sites like ZainabTech or High Tech Info often host firmware archives for various LED TV models, including Onida.

The TV will usually restart automatically once the update reaches 100%. Online Software Update (Alternative)