Use the Delete key as suggested by Acer Community support . đź“Ť Tip: If F2 doesn't work, try holding Fn + F2 . If you'd like, I can help you with: Finding the schematics for this motherboard Step-by-step instructions for using a CH341A programmer Identifying the BIOS chip location on the board layout
The "BIOS BIN" refers to the binary firmware file required to program the BIOS chip (often an EC or a dedicated SPI flash chip) using an external programmer. ea40-cx mb 12280-3 bios bin