RAR archive holding firmware for the iSTAR A70000 receiver, version V8.25 dated 26 June 2021, about 6.31 MB. Unpack it to find the update image and any instructions supplied with it. Such firmware is used to upgrade the box or to recover one that hangs on its logo, either through the update menu, a USB loader or a flash programmer. Confirm the model and board revision against the unit and store a backup of the current flash contents first.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @tvsoftwareworld. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
7-ZipWinRARThe Unarchiver (macOS)