Do not skip these steps. Failing to prepare can lead to a "bricked" motherboard, which requires professional repair.
Multiple users on the Acer Community and Reddit update bios acer nitro 5 an51543
How to Safely Update the BIOS on Your Acer Nitro 5 AN515-43 Updating your laptop's Basic Input/Output System (BIOS) is one of the most impactful maintenance tasks you can perform. For owners of the AMD-powered Acer Nitro 5 AN515-43 gaming laptop, a BIOS update can resolve system instability, patch critical security vulnerabilities, improve thermal management, and enhance compatibility with newer hardware or Windows updates. Do not skip these steps
Plug in your (the update will not run on battery alone). Disable any third-party antivirus software. Disconnect all peripherals (USB drives, mice, printers). For owners of the AMD-powered Acer Nitro 5
: Always keep your laptop connected to its official Acer power adapter.
: If you get this message, you are already running the latest version.