TranslationGood day all,
I Have all the files needed to load firmware 3.60 and USB to serial converter but I would like to know if I can only connect the RX, TX and ground of the RS232 to the eTrex and leave the two batteries in for 3V power supply or must I connect 3V between pin 1 and 4 of the eTrex ?
eTrex H Firmware Install with Batteries Only?
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Piet Le Roux
- Posts: 1
- Joined: Sun Oct 26, 2025 10:53 am
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GPSrChive
- Site Admin
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Re: eTrex H Firmware Install with Batteries Only?
Have not attempted before. Why no power supply?
Please test and let us know!
Please test and let us know!
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javawa
- Posts: 114
- Joined: Sun Apr 02, 2023 12:07 am
Re: eTrex H Firmware Install with Batteries Only?
You don't need 3V on pin 1, batteries suffice (full ones of course).
I've updated lots of devices on battery power only, never experienced problems.
I've updated lots of devices on battery power only, never experienced problems.
My Garmin GPS collection: https://www.javawa.nl/collectie.html