BIOS image for the Angel-TM platform, Wistron board 12281-3, with 4LK02 in the name and a 4MB capacity stated. Angel_TM appears to be the code name used for Acer V5-122P boards in other files, but this name itself gives no model. The 4 MB figure indicates the flash size the image targets. Program it with an SPI programmer after backing up the original chip, and verify both the board revision 12281-3 and the chip capacity before writing.
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 @biosarchive. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →