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Upgrade Uboot Version

Warning

Upgrading U-Boot is very dangerous and generally not recommended. Once it fails, your device will be bricked and there will be no way to restore it. Only do this when necessary or instructed by GL.iNet support.

Do NOT turn off the power during the upgrade process, otherwise it may cause the upgrade to fail and the device to be bricked.

Preparation

  • A computer with an ethernet port. If not, please prepare an additional USB Ethernet Adapter.
  • An Ethernet cable.
  • Download the Uboot file here in advance. Mark sure you are using the correct uboot file.

Upgrade Steps

Please follow the procedures below to access the U-Boot upgrade page.

  1. Remove the power of router. Connect your computer to the Ethernet LAN port of the router. You MUST leave all the other ports unconnected.

    Note

    For some models, certain individual LAN ports and the WAN port are interchangeable. Please do not use this LAN port. For example, on the GL-MT6000 (Flint 2), do not use LAN 1. Please use LAN 2, LAN 3, or LAN 4 instead.

  2. Press and hold the Reset button firmly, at the same time power up the router. If your router doesn't have a power button, plugging the power in will power it on automatically.

    Then you will see a LED flashing in a regular sequence a few times, please release your finger after the sequence changes.

  3. Manually set the IP address of your computer to 192.168.1.2. Please check the step-by-step guide for different operating systems below:

    Windows 7 / Windows 10

    1. Go to Control Panel -> Network and Internet -> Network and Sharing Center -> Change adapter settings.

    2. Right click Local Area Connection -> Properties.

    3. Click Internet Protocol Version 4 (TCP/IPv4) -> Properties.

    4. Set the IP adress to 192.168.1.2 manually.

    5. Set the Subnet mask to 255.255.255.0.

      ipv4 properties

    6. Click the OK button.

    Windows 11

    1. Open Settings.

    2. Click on Network & Internet.

    3. Click the Ethernet tab.

      windows 11 ethernet

    4. Under the "IP assignment" section, click the Edit button.

      windows 11 ethernet edit

    5. Select the Manual option.

      windows 11 ethernet edit

    6. Turn on the IPv4 toggle switch.

    7. Set the static IP address as 192.168.1.2.

      windows 11 ethernet edit

    8. Specify the Subnet mask as 255.255.255.0.

    9. Click the Save button.

    macOS

    1. Click the Apple icon in the top left corner of the screen, and select System Preferences.

      macos system preferences

    2. Click Network.

      macos system preferences network

    3. Click Ethernet on the left and then click the drop-down box next to Configure IPv4 and select Manually. If you are using a USB Ethernet Adapter, Ethernet may not be found and it may show up as the name of the USB Ethernet Adapter.

      macos ip manually

    4. Enter the IPv4 Address to 192.168.1.2, Subnet Mask to 255.255.255.0, Router to 192.168.1.1, then click the Apply button in the lower right corner.

      macos ip manually

  4. Use browser to visit http://192.168.1.1/uboot.html

    gl-ar750s u-boot update page

  5. Click the Choose file button and choose the Uboot file you just downloaded.

  6. Click Update U-Boot button. Do NOT turn off the power during the upgrade process. It will take several minutes to update.

  7. After a successful update, it will reboot the router. At this time you can change the IP setting back in step 3 and try to access the web Admin Panel via 192.168.8.1. If you can access the web Admin Panel normally, it means the router has been rebooted.

    Note: It might be required to use the incognito mode or to delete the browser cache and cookies to access the router.

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