Inmarsat has just released a Mandatory firmware upgrade meaning that the features introduced by the firmware are vitally important for the GSPS service including the network and your IsatPhone Pro handset.
Inmarsat has advised us that this upgrade is absolutely critical as IsatPhone Pro phones that are not upgraded by 30th of June, 2013, will no longer be able to register on to the satellite network and make/receive calls.
What firmware version am I using?
To check you have the latest version on your IsatPhone Pro, select Menu > Settings > About.
How to upgrade your IsatPhone Pro:
To upgrade your IsatPhone Pro firmware you first need to install the USB Drivers.
You then need to download the Firmware upgrade tool.
IsatPhone Pro Firmware Upgrade Tool
For instructions on how to upgrade your phone there is a guide available below.
Download the new handset firmware below:
IsatPhone Pro Firmware 5.2.0
If you have any further questions please leave them in the comments section and we will strive to get them answered for you.