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I have a Yaesu FTA-850 that I want to connect to my BLUETHOOT Sena SF2 but my radio does not find the SF2. So i thought i should update my radio


A software version

main: 01.01.00

Date Aug 31, 2021

Sb: 01.01.00

: Aug 31, 2021


If i connect my radio to my PC I have this famous error: Timeout !! (FirmVer) and I can't even read what's on the radio


If anyone can give me a hand it would be greatly appreciated