# iSG MAX with the error message "Failed to get device license information"?

1\) Download the latest iSG MAX software from [firmware update](https://kb.linknlink.com/isg/settings/system-updates/local-update/isg-downloads), and copy it to a USB drive or SD card. Then, insert the external storage into the iSG's USB port or SD slot.  <mark style="color:purple;">\* If you get error message from google when you click download, please choose different download source.</mark>

2\) Press and hold the power button on the back of the iSG Display MAX. Three quick options will appear - select the last one to access the system settings.&#x20;

<figure><img src="https://1561436000-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FpCtFemS511EXKjNnjKqg%2Fuploads%2FKrKxDm2v1AW4jNmKrm4w%2Fimage.png?alt=media&#x26;token=29d406d2-8c00-48e1-b255-6993d476b1ac" alt=""><figcaption></figcaption></figure>

3\) In the system settings, navigate to storage - Documents & others, and install the APK file from the USB drive or SD card.&#x20;

<figure><img src="https://1561436000-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FpCtFemS511EXKjNnjKqg%2Fuploads%2FQnQEO4lQcs80trBY1ZBe%2Fimage.png?alt=media&#x26;token=3dcb0536-c3f0-4d3f-ac33-89860669edba" alt=""><figcaption></figcaption></figure>

<figure><img src="https://1561436000-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FpCtFemS511EXKjNnjKqg%2Fuploads%2FBxXXZNC9qtXMxyVAp1FL%2Fimage.png?alt=media&#x26;token=cb568096-9bfe-434d-ad7a-6f6069aa1c7b" alt=""><figcaption></figcaption></figure>

4\) after APK successfully installed, Use the power button to access the quick options again and select “Restart.”&#x20;

5\) After restarting, a page will appear asking you to send us the MAC address. Please take a photo or write it down, then send the MAC address to <support@linklink-iot.com> and wait for our confirmation.（Make sure the photo is taken clearly so that we can read the correct MAC address.）

<figure><img src="https://1561436000-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FpCtFemS511EXKjNnjKqg%2Fuploads%2FCPIwQUiJpttnbEVmqNJs%2F%E4%BC%81%E4%B8%9A%E5%BE%AE%E4%BF%A1%E6%88%AA%E5%9B%BE_20240929142926.png?alt=media&#x26;token=7ffcdf86-fa72-4163-a3c5-b75efa19fbdb" alt=""><figcaption></figcaption></figure>

&#x20;We will register your MAC address in the cloud for automatic activation, so your iSG will no longer require any activation in the future.