"Part 2" suggests the total firmware was split into multiple segments due to file size limits.

These files usually cannot be installed via USB if the TV won't boot. You typically need an RT809H or CH341A programmer to write the data directly to the chip. 🔍 Where to Find This File

Only download from reputable technician communities.

Downloading firmware from unofficial third-party sources carries significant risks:

What is the (printed on the green circuit board inside)?

Firmware must match the Panel Number and Mainboard Number exactly. Using the wrong version can permanently "brick" the TV or cause a distorted/upside-down display.

What is the TV showing (e.g., stuck on logo, no power, blinking light)?

To help you find the software you need and avoid damaging your TV, could you tell me: What is the Model Number on the back of the TV?