Power off the TV, insert the USB, and hold the power button while plugging the TV back in to trigger the auto-update.
While specific steps vary by TV brand, the standard process for these boards involves: Download MS6488E U801 3840x2160 TEMPO part07 rar
Installing incorrect firmware can permanently "brick" your television. Always verify that the firmware matches your specific panel model (e.g., HV490QUB-N8A) and mainboard. Power off the TV, insert the USB, and
Format a USB drive (ideally 8GB or smaller) to FAT32 . Power off the TV
Issues with audio, Wi-Fi connectivity, or smart apps. General Installation Procedure
Copy the extracted file to the root directory of the USB drive.