Iridium Extreme - Firmware Update HL21001

The firmware update tool and release notes for Iridium Extreme Firmware update HL21001 may be downloaded below.

How to check current Firmware:

Before updating the Firmware on the Iridium Extreme 9575 it's important to know what firmware version your phone currently has installed. To check the current version:

1. On the main screen, select Menu

2. Scroll down and select Setup

3. Scroll down and select Phone Information

4. The Firmware Version will be the first option

Firmware update files: