To find the BIOS updates for the , visit the official Acer Product Support Page for Aspire 5749 . Steps to Download the BIOS
Never attempt a BIOS flash on battery power alone. Plug in your charger.
Copy the BIOS file (often an .fd or .bin extension found inside the Acer zip extractor) alongside the DOS flasher tool executable into the root directory of the USB drive.
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Acer hosts all legacy firmware on its official support portal. Because direct download URLs can change over time as infrastructure updates, use the following verified steps to get the exact file for your machine: Go to the official .
While holding the keys, plug in the AC adapter and press the button.
Restart the laptop, press repeatedly to enter the BIOS setup, and change the boot order to prioritize the USB drive. To find the BIOS updates for the ,
Your specific model number might be listed as Aspire 5749, 5749Z, or 5349, but they generally share the same firmware package.
Your mouse and keyboard will temporarily freeze, and the laptop fans may spin at maximum speed. This is completely normal behavior. Once complete, the laptop will automatically reboot itself. Troubleshooting Common Errors
Installing a new SSD, upgrading your Wi-Fi card, or expanding to the maximum 8GB DDR3 RAM capacity often requires updated firmware microcode. Copy the BIOS file (often an
Patches critical microcode bugs that cause random Blue Screen of Death (BSOD) crashes or power management failures.
Copy the BIOS ROM file ( .fd or .bin extension) and the DOS flasher tool ( Flashit.exe ) from the extracted Acer folder onto the root of the USB drive.
Disconnect the AC adapter and remove the main laptop battery.