[vcf-midatlantic] OT: need help upgrading Linux gadget firmware

Mark Whittington markwhi at gmail.com
Mon Dec 25 19:34:15 EST 2017

Getting a 404 when trying to grab the firmware file from your site at
http://www.snarc.net/forerunner15_270.rgn -- still looking for help?

On Mon, Dec 25, 2017 at 7:06 PM, Evan Koblentz via vcf-midatlantic <
vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:

> This has nothing to do with vintage computing.
> I wear a Garmin GPW watch when I'm running. The model is Forerunner 15
> with version 2.40 of their firmware.
> The latest firmware is version 2.70. Officially, they require Windows
> software Garmin Connect to download the firmware and synchronize it to your
> device. Garmin Connect in turn requires a late-model version of .NET
> Framework.
> I couldn't get .NET Framework to install in WINE, so I started Googling
> for manual upgrade methods.
> I found a few relevant posts:
> https://forums.garmin.com/forum/into-sports/running/forerunn
> er-620-aa/70154-linux-user-needs-help-to-update-firmware
> https://forums.garmin.com/forum/into-sports/cycling/edge-520-aa/125491-
> Both posts indicate a method of downloading the firmware file manually
> (done), changing it from (filename).rgn to gupdate.gcd, attaching the watch
> via its USB charging gadget to your computer, putting the file in the right
> directory, dismounting the device from Linux, and rebooting the device.
> Easy enough ... except nothing happens when I reboot the watch and its
> settings menu still shows version 2.40.
> There are posts about editing out part of the file using a hex editor, for
> example, post #6 in the first link that I put above.
> I downloaded a hex editor and can see the data but I have no clue how to
> use it.
> The file is on my personal site: http://www.snarc.net/forerunner15_270.rgn
> Lil' help?

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