It must not be installed in UEFI as that /sys/firmware/efi/efivars/ directory normally has a nvram file that can be copied to the missing firmware for SDIO cards in many cases you just have to do
Code:
sudo cp /sys/firmware/efi/efivars/nvram-74b00bd9-805a-4d61-b51f-43268123d113 /lib/firmware/brcm/brcmfmac43430a0-sdio.Acer-One S1003.txt
Reboot and it is working