zumo 590 software version 3.30
as of July 22, 2016
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Changes made from version 3.20 to 3.30:
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Fixed an issue that could prevent the audio input option from appearing when an Apple iPhone is connected using Bluetooth wireless technology.
Fixed Bluetooth connection and reliability issues.
Fixed an issue that could cause the device to repeat "You are on the fastest route."
Fixed an issue that could prevent the MP3 folder from appearing.
Fixed an issue that could prevent favorites from appearing in search results.
Fixed an issue that could cause "TPMS is disconnected" to display too frequently.
Improved software stability.