Acer occasionally removes legacy BIOS files from their main mirror. If you cannot find the official link:
The Aspire 5749 uses an InsydeH2O BIOS. This is interesting for advanced users because Insyde BIOSes are notoriously difficult to modify.
As direct links can change over time, I'll guide you through a more sustainable approach:
Assuming you find the correct file (usually version 1.23 or 1.24 being the final releases), what do you get?
Before searching for a link, ask yourself: Do I really need this update? Updating your BIOS (Basic Input/Output System) is not like updating a driver. A failed BIOS flash can permanently brick your laptop. Only proceed if you are experiencing one of these specific issues: acer aspire 5749 bios link
If you need a direct link and the official site is down, let me know, and I can help locate a cached version, but I strongly advise against third-party hosting sites for BIOS files.
To find the BIOS updates for the Acer Aspire 5749 , visit the official Acer Product Support Page for Aspire 5749. Steps to Download the BIOS
Download Acer Support Drivers and Manuals | Acer United States
Download Acer Support Drivers and Manuals | Acer United States * Home. * Support. * Drivers and Manuals. Latest available BIOS version - Acer Community Acer occasionally removes legacy BIOS files from their
Step 1: Extract the BIOS file.
If you downloaded a .zip file, right-click and select Extract All. Inside, you will typically find:
Step 2: Run the Windows-based flasher.
Step 3: Confirm the update.
Step 4: Do not touch anything. The update takes 1-3 minutes. The laptop might restart or beep. Do not press the power button. Do not close the lid. If the screen goes black, wait 5 minutes before panicking. Step 2: Run the Windows-based flasher
Step 5: Automatic reboot. After the flash completes, the laptop will reboot. On the first reboot, you may see a message: “New BIOS detected. Press F2 to configure.” Press F2, then Load Setup Defaults, then Save and Exit.
The official, safest link is the Acer Support Drivers & Manuals page:
👉 https://www.acer.com/ac/en/US/content/support-product/3719 (Note: Acer periodically restructures URLs. If this link fails, navigate manually.)
How to navigate manually:
What you will find: Once on the correct product page, click the “BIOS/Firmware” tab. For the Acer Aspire 5749, you typically see one of two BIOS versions:
Direct regional links (may redirect):