Many users share this firmware via this Google Drive link found in technician communities.
For the most reliable downloads, technical forums dedicated to TV repair are the best source. The Lab-One Forum often hosts these firmware packages, including the specific files.
The (specifically referring to the T-RD8501-03 chipset) is a popular universal LED TV controller board used for repairing or upgrading TV sets. Finding the "All Resolution USB part04.rar" file is essential if you are working with a multi-part archive containing firmware for various screen resolutions. Where to Download
Power on the TV. The indicator light should blink, signaling the update is in progress. until the blinking stops.
: Ensure all parts (part01 through part04) are in the same folder. Right-click the first file and extract it; it will automatically pull data from all parts. Prepare USB : Format a USB flash drive to FAT32 .
Sandeep. Post Sat Dec 28, 2019 6:14 pm. T-RD8501-03 USB Firmware Software Bios Bin. -1024x768. -1280x768. -1280x1024. -1366x768. - Lab-One Forum