Inmarsat IsatPhone Pro Satellite Phone

Please note that firmware updates are done at the users risk, it is important to follow instructions precisely to minimise risk of damage.

The IsatPhone Pro firmware version 5.17.2 is available for download below.

To check you have the latest version on your IsatPhone Pro, go to Menu > Settings > About > Firmware version. (Pre-requisites for installation and advice after installation, the handset must be running firmware version 3.0.2 or above)



Recommendations for installation

Firmware version 5.17.2 is a recommended release, mandatory only for users covered by the MEAS (I4-F2) satellite region.

For users covered by the MEAS (I4-F2) satellite region these firmware versions are mandatory for IsatPhone Pro as the versions include features to handle the unique GSPS signalling over India. Users on previous firmware versions will be rejected by the network from 1 August 2017 to be compliant with India national telecommunication regulations.


Please follow the steps below in sequence.

USB Drivers

Please note, you will need to install the USB drivers first before connecting the handset to your PC.

If you do not do this, Windows will try to use another driver that is not compatible and therefore, it will not work.

Driver installation is a 3 step process

  • Download drivers
  • Unzip drivers
  • Install drivers

All three steps are detailed in the instruction guide.

USB Drivers are compatible with Windows XP, Windows Vista, Windows 7, 8 and 10.
(For Windows 7, USB 3.0 is not supported.)

» Download IsatPhone Pro USB drivers


Please follow the instructions available for PDF download below.

Download the below PDF, it contains instructions on how to upgrade the firmware version on the IsatPhone Pro

»Firmware upgrade guide


Recommended: Firmware version 5.17.2 supersedes the firmware version 5.11.0

Firmware Upgrade Tool

From time to time, it may be necessary to upgrade your phone in order to improve its functionality and operation.

You will be notified by Inmarsat and/or your Service Provider when a firmware upgrade is required.

» Download IsatPhone Pro Firmware Upgrade Tool


Download from the link below and follow instructions

» Download IsatPhone Pro firmware V5.17.2


» IsatPhone Pro Firmware 5.17.2 release note