The string of characters is actually a set of technical specifications:
: These are internal revision codes or reference numbers used by manufacturers to ensure compatibility with specific hardware batches. Download HV530 PC821 1920x1080 M90 REF36 part03 rar
This specific file name refers to a for a specific LED/LCD TV motherboard, likely the TP.HV530.PC821 model. The string of characters is actually a set
: This indicates the Full HD resolution the firmware is configured for. Loading a version with the wrong resolution can result in a garbled or blank screen. Download HV530 PC821 1920x1080 M90 REF36 part03 rar
: This shows that the original software was too large for a single upload and has been split into multiple compressed parts. You would need parts 01 and 02 to successfully extract the usable .bin file. Why people search for this