Acer's support site for the ES1-512 series
: If you try to install a BIOS version you already have, the installer will stop. acer aspire es1-512 bios update
Press the Windows Key + R , type msinfo32 , and press Enter. Look for BIOS Version/Date to see if you already have v1.15. Acer's support site for the ES1-512 series :
While Acer’s flasher does not offer a backup, you can use a third-party tool like Universal BIOS Backup Toolkit 2.0 to save your existing V1.08 ROM to a USB drive. This can be a lifesaver if you need to downgrade. and check your current BIOS version.
This method uses a built-in executable file to flash the BIOS while Windows is running.
: Press Win + R , type msinfo32 , and check your current BIOS version.