Sena SMH10 firmware upgrade

[Peg]

I see Sena have released another small firmware upgrade for the SMH10, SPH10, SMH5 models...

SMH10 Firmware Version 4.2.1 Release Notes June 12, 2013
CHANGES
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- Minor bug fixes in A2DP connection and more

[Old Bear]

Yup, done got it - don't even look to see what's up. We just added our third unit in, figured I might as well do the firmware while I was at it.