How to fix the Broadcom SDIO WiFi on Unisurf USFNWXM14BLK for Windows 10 around March 2018


Edit: getting several comments that this didn’t work. Unfortunately I don’t own this laptop so I can test to see if this solution is still valid. It has worked for me twice. (April 2018 ish)

If you upgrade Windows 10 (presumably by using the media creation tool) you may find the WiFi no longer works. (14 inch laptop.)

I had this problem and called Unisurf for a solution. Here is their solution, which worked:

Thanks for your enquiry, here are the steps on how to reinstall the wireless driver.

1. Please click the link
2. Then download and save the file to a USB Flash Drive
3. Plug the USB Flash Drive to your device
4. Run and Install the file (You may get an error message after the installation, just disregard the message and follow the next step.)
5. Reboot the Computer
6. Wireless Network should work again
7. Please reply to this email if the issue is fixed or not to assist further if needed


  1. Sam says:

    The driver installtion is not working, it gives an error and stops the setup. What to do ?

    • Roger says:

      I have spent 2 days trying to get this to work and have had no luck
      I have called unisurf support, they are not helpful. they can not even tell me what version 32 or 64 Bit. I would never buy another unisurf product.

  2. Jane says:

    Didn’t work. New install because the other would not repair. Ran the April install- no network. Of any kind. Help?

  3. Omer says:

    It still doesn’t work, can you please help me out

  4. David Mikhail says:

    Thank you
    But it not working i get a yellow triangle in Device Manger and no WIFI
    Please help fresh installation of Windows 10 VER 1803 & all windows updates installed .
    Thanks david

  5. Jae says:

    Did a complete format without saving drivers. New install windows 10 enterprise. Multiple unknown drivers, no sound driver, no Wi-Fi…. Please help

  6. joy says:

    This thing doesnt work at all. The company has to find the solution for its customers

  7. Chris says:

    Worked perfectly for me, thanks heaps!

  8. CHRISTOPHER says:

    I have to keep uninstalling Bluetooth and restarting my unisurf laptop. Even without WiFi enabled the Bluetooth spazzes out and sound ceases at least once every Netflix stream or video download. This is unnaceptable and they need to do something about trashtops being allowed to be sold. The Bluetooth is cheap and faulty in unisurf.

    If you are thinking of buying a Unisurf. DONT. Pay a little more for a brand name. You will thank me.

  9. Abby says:

    This worked for me

  10. Stephen says:

    go to download (14inch drivers unisurf) to good USB device plug it in unisurf etract and install it works

  11. yitbarek says:

    Try this site and works perfectly. I had the same issue and solved after downloading the driver file from the below site

    Follow the instructions under \installer\platforminstaller\drivers\Z83-4 WiFi driver

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