BIOS archive for the Dell 5520 on Compal board LA-K491P, described in the name as the Type-C BIOS, with a UT7 tag. At 139 KB, the RAR is small, so it likely holds firmware for the USB Type-C power-delivery controller rather than a full system BIOS; check before use. A faulty PD firmware can cause charging or USB-C port failures. Flash it to the matching small SPI chip with a programmer after saving the original contents, and confirm the board number on the PCB.
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 @skclappybios. 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.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →