Question about Garmin Forerunner 305 GPS Receiver

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Can't change date on garmin forerunner 305

Anyone know how to change the date on the forerunner 305? its brand new and have been for a few runs but all the dates are wrong and I've been through all the menus and there's no way of altering (or either seeing) the date. The time is right so that's something. also seems to take 5 mins to locate satelites...

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  • petersjunk Feb 28, 2009

    the 305 keeps recording incorrect dates for the workouts

  • maudigz Mar 08, 2009

    same problem with the Garmin listing an incorrect date for a run when I download into my PC... Any solutions?? Can the downloaded date be cjanged once downloaded??

  • tjseeley Mar 29, 2009

    I ran today (3/29/09) at about 6:30. It posted the date as 3/18 at after 9 p.m. This is rediculous! How can I change the date (the time appears correct on the forerunner).

  • struck1 Apr 14, 2009

    Yesterday was only the 3rd time I rode with my Forerunner 305 and the date it recorded was 6 days off. How do you change the date on this unit?
    NOTE: the first two rides were correct.



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My 305 takes a while to locate satelites sometimes too, otherdays it is only a minute or so. Try not to be standing near the sides of any buildings / houses (out in the open) and also stand still if you are wearing it while it is locating the sattelites. Better still, I like to put it on the ground or on a table (outside) when I turn it on so the receiver is facing directly up to the sky when it is first turning on (while you are stretching or something), then put it on when it is ready to go.

Have you tried in the settings to change your location, then it will get you to confirm the date?

Posted on Jan 25, 2009

  • pseely Apr 27, 2011

    I have had the same problem a couple times with the date. "Maybe" we "paused" a previous workout, when we were actually done, and then when we began our "next" workout it inadvertently uses the previous date?
    Anyway, you can change the "wrong" date after you download into your PC. Once downloaded into Training Center, you then "export" it to your Garmin Backup folder. Then open it (it will be a text file) and do a "edit" - "replace" , searching for the erroneous date and replacing it with the actual date. However, save it not as a .txt extension, but rather with a .tcx extension. Otherwise, Garmin software will not recognize it. Go to "save as" - "all files" and add .tcx to the end of the filename. Good luck!


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IT would appear the it is taking the time from the GPS signal ...

Posted on Mar 09, 2010

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Just how is the date and time corrected or changed. The question is asked alot on this blog. But why no answer???????

Posted on Dec 14, 2009

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1 Answer

It does not turn or or charge. Connected to laptop but got same results. Tried to install latest software but it would not the unit (forerunner 305). Message was that there was no unit connected...

Here's a few options: Soft Rest

- Hold down MODE + RESET for few seconds
- Press the Power button to turn on the device


Hard Reset
(This will erase all of your data inside the device)

- Hold down MODE + RESET + POWER for few seconds
- Press the Power button to turn on the device


Firmware Downgrade/Upgrade (2.9 > 2.8 > 2.9)
(This will erase all your data inside the device)

Software Downgrade/Upgrade

- Connect your Garmin Forerunner 305 to the computer
- Press the UP arrow button and hold while doing all the other steps below
- Press MODE + RESET for a moment (the computer will recognize the device)
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- Downgrade Firmware from 2.90 to 2.80. (You are still holding on that UP arrow button!)
- When the update is finished the Forerunner 305 should power on running the Firmware 2.80.
- Let go of the UP arrow button, disconnect the device from USB, connect it again and the computer should recognize it normally
- Update the Firmware to the current version.

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Glad to HELP YOU!

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