You can find hosted files and guides through communities like Electro-Support or specialized technical channels such as this setup guide .
Finding the firmware for the (which uses the TP.HV553.PC821 motherboard) requires downloading all parts of the split archive to successfully extract the update file. The "part06.rar" you are looking for is one segment of a larger multi-part compressed set common for 4K TV software due to the large file size of the 3840x2160 resolution firmware. Firmware Specifications Board Model: TP.HV553.PC821 Main Chipset: HI3751V553 Resolution: 3840×2160 Ultra HD OS Version: Android 7.0 Panel Support: 50, 55, and 65-inch panels Download & Installation Steps
Turn on the main power. The TV indicator light should begin blinking to signal the update is in progress.
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