m-cramer Satellitenservices


Inmarsat IsatPhone 2 (Model 2.1) Language File size updated

IsatPhone 2 is available in two models. The original IsatPhone 2 model has been available since 2014. The second model IsatPhone 2 (Model 2.1) was introduced in 2018. Both models use different firmware versions, USB drivers and software tools. You can identify the model by going to the ‘About’ menu setting of the handset.

Please make sure to identify your correct IsatPhone 2 model before proceeding to download and install new files: IsatPhone 2IsatPhone 2 (Model 2.1)

Firmware 1.00.05 (ZIP) 23 MB 20.09.2018
Firmware 1.00.05 release notes (PDF) en 89 KB 20.09.2018
Firmware 1.00.03 (ZIP) 23 MB 14.08.2018
Firmware 1.00.03 release notes (PDF) en 75 KB 14.08.2018
Firmware Upgrade Tool (ZIP) 27 MB 14.08.2018
Firmware Upgrade Tool Manual (PDF) en 752 KB 14.08.2018
USB Drivers (ZIP) USB Drivers are compatible with Windows 10, Windows 8, Windows 7 and Windows XP. 1 MB 14.08.2018
USB Drivers Guide (PDF) en 742 KB 14.08.2018
Onsatmail 6.4.57 Windows (ZIP) You can run this Onsatmail version with IsatPhone Pro and IsatPhone 2 phones. With later versions, this is currently (07/2017) not possible. On request, we will be happy to send you an installation manual. 21 MB 03.09.2019

Update-Service for Inmarsat IsatPhone 2 (Model 2.1)

Onsatmail 6.4.57 Windows

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The software downloads and their documentation are provided without any warranty for function, correctness or accuracy. For any direct or indirect damage, in particular damage to other software, damage to hardware, damage due to loss of use and damage due to malfunction of the software can not be asserted. Only the user is liable for the consequences of using this software. Therefore, no guarantee can be given for faultless operation and use is at your own risk.


Downloadable software is available for free under the terms of the GNU General Public License (GPL) Version 2 or Version 3 license and or under license from the respective manufacturer.

Written offer

This product contains software whose rightholders license it under the terms of the GNU General Public License, version 2 (GPLv2), version 3 (GPLv3) and/or other open source software licenses. If you want to receive the complete corresponding source code we will provide you and any third party with the source code of the software licensed under an open source software license if you send us a written request by mail or email to the following addresses:

m-cramer Satellitenservices
Matthias Cramer
Holzhofallee 7
64295 Darmstadt

detailing the name of the product and the firmware version for which you want the source code and indicating how we can contact you. Please note that we will ask you to pay us for the costs of a data carrier and the postal charges to send the data carrier to you. The amount can be varied according to your location and m-cramer Satellitenservices will notify the exact cost when receiving the request.

This offer is valid for three years from the date of the last publication of the software on our website.