broadcom 802.11ac

Good SUNDay my broadcom 802.11 ac WDI SDIO adapter , driver not up to date ,,,, little yellow notice on it . also i disable it now no wifi at all.
where i can dowload broadcom 802.11 ac WDI SDIO latest driver thank you , how to enable it again
You may download the driver by clicking the following link.

The instructions to install the driver can be found here:

Please note, the "802.11 ac WDI SDIO" device is the Wi-Fi device, and when finished manually installing the Wi-Fi driver, you'll have to move 4345r6nvram.txt to the folder C:\Windows\System32\drivers\, and restart the box to make the driver take effect.