The latest firmware release for the Iridium Communications’ 9555 satellite handset includes the ability to directly interface with computers running on Windows XP, Vista and Windows 7, as well as Mac Version 10.4 or later. The upgrades make it easier for users to send and receive e-mails and exchange computer files through the Iridium satellite phone. The Iridium 9555 connects to the laptop with a standard mini-USB cable.

In addition, the Iridium 9555 has enhanced short-message service (SMS) text capabilities. Iridium 9555 users can now send and receive long SMS texts up to 1,000 characters in length to an e-mail address or mobile phone. Previously, the Iridium 9555 offered the ability to text up to 160 characters.