Scope:This article will show you how to perform a firmware upgrade on Grandstream phones. New firmware versions will upgrade your phone with the latest bug fixes and features available to your phone model.Requirements:Phone Firmware FileAccess to phone Web GUIDownload the FirmwareNavigate to http://www.grandstream.com/support/firmwareScroll down until you locate the model of the phone you are looking forClick on the firmware version of the phone to download the latest firmware or copy the HTTP Upgrade Server URLAccess the Web GUIPress the Up arrow key on the phone and note the IPv4 addressType in the IP address into the search bar of any computer browser and you should be met with the following screen The default login for an unprovisioned phone is admin/admin. Please contact support for the login for a provisioned phoneUpgrade the FirmwareNavigate to the Maintenance tab and click on Upgrade and Provisioning  Click on Start and upload the firmware file previously downloadedHit Save and Apply and the phone should reboot automatically, if not then press the Reboot button located at the top of the page