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I want to put the new 2.10 software on my Garmin Etrex. If I purchase the PC adapter cable, will I also need a power supply, or can I run off batteries while the software is loading?

April 26, 2017adapter cable etrex Garmin pc power purchase Software

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I want to put the new 2.10 software on my Garmin Etrex. If I purchase the PC adapter cable, will I also need a power supply, or can I run off batteries while the software is loading?

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A. You can use batteries, but it is important to use new batteries because power outage during flash programming may force you to return your etrex to Garmin. (It is the same problem as when you upgrade the bios of your PC) But if you check it, no problem : I upgraded my etrex firmware 6 or 7 times without failure.