IsatPhone Pro Firmware Upgrade
This is a mandatory firmware upgrade. It supersedes version 5.2.0, which had a deadline for mandatory update of 30 June 2013. Given the replacement of firmware version 5.2.0 with 5.3.0, the upgrade deadline has been extended to 31 December 2013.
Inmarsat recommends that customers upgrade their phones to version 5.3.0 or higher at the earliest opportunity (or 5.2.0 or higher for handsets shipped before 7 September 2012).
All phones must upgrade by the extended deadline of 31 December 2013 or the user will experience problems connecting to the network.
We apologize to any customers who may have been inconvenienced. Customers are advised to contact their Service Provider for further information.
IsatPhone Pro Firmware 5.3.0 Release Notes (Read This First)
https://www.inmarsattx.com/IsatPhone_Pro_Firmware/IsatPhone_Pro_firmware_5_3_0_release_note.pdf
Step by Step Guide for Upgrading
https://www.inmarsattx.com/IsatPhone_Pro_Firmware/IsatPhone%20Pro%20How%20To%20upgrade%20June%202010%20EN.pdf
Download Links:
Upgrade Tool - https://www.inmarsattx.com/IsatPhone_Pro_Firmware/FirmwareUpgradeTool.zip
5.3.0 Firmware - https://www.inmarsattx.com/IsatPhone_Pro_Firmware/IsatPhone_Pro_firmware_version_5_3_0.zip
USB Drivers - https://isatphonelive.com/media/wysiwyg/support/IsatPhone_Usb_Drivers.zip