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Firmware update for Iridium handsets - 8 Dec 2021

8 December 2021: Iridium has released firmware updates for its 9555, Extreme 9575 and Extreme PTT satellite handsets.

Here is how to update your equipment to the latest firmware versions:

Iridium 9555 - HT21001

Iridium Extreme 9575 - HL21001

Iridium Extreme PTT - HP21001

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