Go to your OEM’s official support site (Advantech, IEI, etc.). Never download from third-party forums. Look for files named 844G1_Vx.x.bin , .rom , or .cap .
For the 844G1, use the original power adapter (12V or 24V industrial supply). No batteries – use UPS if mains power is unstable. 844g1 firmware update top
map -r fs0: (If fs0 doesn't contain your files, try fs1: or fs2:) Assuming you have fpt.efi (Intel Flash Programming Tool) and 844G1_update.bin : Go to your OEM’s official support site (Advantech,
Disclaimer: Always refer to your OEM’s official documentation. This guide is for informational purposes. Incorrect firmware flashing can void warranties. or .cap . For the 844G1