This is a multi-part archive (Part 01). You must download all parts (often labeled part01, part02, etc.) to successfully extract the .bin file.
High risk of "bricking" if the hardware doesn't match; requires a FAT32-formatted USB drive; multi-part download is tedious. Where to Find Support Download RT2861P839 3840x2160 MAGIC 55&58 part01 rar
Once installed, users report the 4K output is stable, maintaining the correct aspect ratio for 55" and 58" screens without the distortion common when using generic firmware. This is a multi-part archive (Part 01)
You can find technical discussions and file mirrors on repair communities like KenotronTV or through manufacturer help desks like Kogan Support , which provides specific instructions for similar Realtek boards. requires a FAT32-formatted USB drive