Iridium 9555 (HT19002)

This upgrade includes the following updates:

  • Leveraged enhancements offered by the Iridium NEXT constellation to improve network connectivity and improve the reception of transceiver ring notifications from the core network.
  • Resolved an issue wherein when the user attempted to enter the SMS menu when the outbox on the SIM was full the handset would reboot.
  • Fixed an issue preventing to display of predictive help content.
  • Corrected an issue preventing to display of firmware version in French.
  • Updated Iridium branding content in Upgrade Tool.

Firmware upgrade tool and Release notes are available. Please send an email to to request a download.

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