> For the complete documentation index, see [llms.txt](https://kb.linknlink.com/isg/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kb.linknlink.com/isg/faq/updating-related/isg-max-with-the-error-message-failed-to-get-device-license-information.md).

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

1\) Download the latest iSG MAX software from [firmware update](/isg/settings/system-updates/local-update/isg-downloads.md), 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="/files/URZAmhiW2dwzw6jLo4uR" 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="/files/64lvuVRMsizRfYloVNns" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/j3PUsTvetAR7zTBG5QL2" 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="/files/u5ZzUYOiEVkkOX4rhnuw" 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.