Garmin Forerunner 305 software update 2.90
Just noticed on the Garmin web site, there’s a software update available for the Garmin Forerunner 305 (effective November 17th, 2006).
Changes made from version 2.70 to 2.90:
- Improved ability to acquire a satellite fix while moving around warming up and stretching.
- Improved satellite tracking reliability for multi-hour activities.
There’s also a note the software update will reset the 305 device clock to October 28, 2006, 23:59 UTC. To correct the date and time you’ll need to acquire a satellite fix, which may take longer than normal to obtain.
I also noticed that “improved handling of tunnel reacquisition issue” was included in the change from 2.40 to 2.70. I’m going to check what version I have loaded as this may be the cause of bad data at the Marine Corps Marathon a few weeks ago. Towards the end of the race I lost signal after going under a couple of bridges and running alongside several tall buildings. It wasn’t until the last mile of the race I was able to get a good satellite fix. Very frustrating….
UPDATE: Well I just checked my 305 and I still have version 2.40 of the software loaded, despite running the Garmin WebUpdater on a regular basis. In fact, even after running the Updater tonight, the wizard said I already had the latest version. Here’s a screenshot of the Equipment tab of my latest MotionBased activity, clearly showing “The recommended version is 2.40“.

A quick visit to the Updates & Downloads page of the Garmin web site enabled me to grab version 2.90 and update the software on my Forerunner 305. Hopefully I’ll notice an improvement the next time I use it.
UPDATE 2: Not sure why I only just figured this out, but there’s two updates available for the Forerunner 305 - Unit Software Version 2.40 and the Chipset Software Version 2.90. Hopefully that will clear up any confusion if you’ve just read the post above.
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April 10th, 2007 at 2:30 pm
Just got my unit yesterday. The software is v2.60. GPS Chipset is v2.90.
Hope this helps.