T.RD8503.03 Universal LCD Controller Firmware
The original firmware for the T.RD8503.03 Universal LCD TV Controller Driver Board. Instructions on using the firmware can be found in the blog post: "Old LCD reused with T.RD8503.03 controller".
The archive is in RAR format.
I mirrored the file here for when the original page on the Banggood website disappears (which will happen sooner or later). No copyright infringement intended.