> 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/how-to-use-usb-drive-to-update-isg-firmware.md).

# How to use USB drive to Update iSG firmware?

### 1. Download iSG update file onto a USB drive

### 2. Access the system settings

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.

<figure><img src="/files/yYeNgLuqefdBEjOapjlm" alt=""><figcaption></figcaption></figure>

### 3. Find USB Drive in system storage

In the system settings, navigate to storage - Documents & others, and install the APK file from the USB drive.

<figure><img src="/files/WCPzQCyzY3nswlCA5JRo" alt=""><figcaption></figcaption></figure>

### 4. Click “USB DISK”，select iSG update APK file and finish installation.

<figure><img src="/files/5VpxjX3NAlU94mZeYMTO" alt=""><figcaption></figcaption></figure>

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