Question about Garmin Forerunner 305 GPS Receiver

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Garmin Forerunner 305 usb cable won't be read

A few days ago when I connected by Garmin Forerunner 305 into it's base for the computer to read, it was fine. Now, my computer won't read the USB and my watch won't even turn on. When I plug in my USB it tells me it isn't reading it and I need to replace the item. I have tried restarting my computer and even using it on my laptop but still the same message comes up - there is a malfunction in the USB port and I need to replace that item. Just a couple days ago it works and now I can't get anything to work. HELP!

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The problem is probably not with the USB cable if the GPS wont even turn on. The older firmware of the Forerunner 205 and 305 have a problem with locking up. This causes the Forerunner to look completely dead. There is a reset procedure: push the mode and reset button at the same time and then let go and hit the power on button. If it powers on that is the problem. Go to the Garmin site and load the newest rev. of firmware into the Forerunner. Fixed mine and a few friends with the same problem.

I do however have a cable problem. Sometimes my PC will come up with unrecognized USB device and my 305 wont talk to the PC, it does charge. It is the cable or dock for sure, because I have tried a different cable/dock and the 305 has no problem. This is the reason I ended up here. I hope the lock fix works for those with the above problem.

Posted on Mar 06, 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)
- Dowload the Firmware from Garmin's website.
- 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.

Nov 04, 2012 | Garmin Forerunner 305 GPS Receiver

1 Answer

Forerunner 305 "problem receiving activities"

I've had this problem. First -- and this sounds weird -- use a USB port on the back of your computer. Do NOT use a "secondary" type of USB port, such as an add-on hub, the ports on the front of a desktop machine, ports built into peripherals like a monitor, etc. Apparently, all USB ports are not created equal. Second, make sure you've the freshest Garmin Communicator plugin (which may entail a fresh download/install).

Apr 28, 2011 | Garmin Forerunner 305 GPS Receiver

1 Answer

I have bought a new computer, windows 7. I cannot install driver for forerunner 305.

Glad to HELP YOU!

It's a well-known issue between Windows 7 and Garmin Forerunner.
Garmin company says it's a compatibility issue concerning the USB connection between the computer and the device and usually they recommend to be an Intel Chipset.
Try to download and install using the latest drivers available on their site on WIN 7 and Forerunner 305.m You have them ALL here and the USB driver was released this year and it's the last one on that list.


Mar 26, 2011 | Garmin Forerunner 305 GPS Receiver

1 Answer

My new computer running Win 7 will not recognize my Forerunner 305; I have installed and reinstalled training Center, drivers etc. and it still wont work. The USB connection is good because I can hear it...

Did you install from the CD or did you install the latest drivers (dated Dec 2009)? has the latest USB driver. Other software updates are at

The newer drivers are Win7 compatible. Next, do you plug it into the computer or a hub? Try a direct connection. Also look at the contacts on the device and the cable. If there are any dark spots try cleaning the oxidation with a pencil eraser or another non-abrasive material (toothpaste for example).

What version firmware does the software report? If you see 0.0, try reinstalling the firmware . Download the software, then run it (click run a second time if the UAC comes up). Then connect the Forerunner to the computer. You'll need to allow extra time for a satellite fix the next time you use the device.

I hope this helps.

Cindy Wells

Apr 26, 2010 | Garmin Forerunner 305 GPS Receiver

1 Answer

Appears to recognise connection but when receiving

Back up your Garmin Training center (File , Export, History...Workouts... Courses.

Then try reinstalling software. My wifes PC has done this a few times. I think it is becasue she is not using the "safly remove hardware" icon in the task bar when disconecting.
Reinstalling the sofware has worked for us.

Jan 26, 2010 | Garmin Forerunner 305 GPS Receiver

3 Answers

Garmin Forerunner 305 USB Not Recognized

Cleaning the gold contacts on the watch with a pencil eraser fixed it for me.

Nov 11, 2009 | Garmin Forerunner 305 GPS Receiver

1 Answer

Ive not had my garmin 305 long, it will not charge or turn on.

This might just need a reset. To reset the Forerunner or Edge 205/305:
  1. Connect the device to the computer using the USB cable
  2. Press and hold the mode and reset (lap) buttons together for 10 seconds
  3. Release and wait for 3 seconds
  4. There should be some indication of battery charging (either Finished or In Process)
  5. Power the device on while keeping it connected to the computer
In addition, please make sure that the device has the latest software version available by downloading and running the WebUpdater program. To update the software, please use the following link:

Sep 21, 2009 | Garmin Forerunner 305 GPS Receiver

1 Answer

My Garmin 305 has stopped working. It is 1 1/2

If it won't start, try connecting it to your computer and see if you can get a firmware update to turn it on. Otherwise I would send it into garmin since there aren't replaceable parts for consumers.


Jul 17, 2009 | Garmin Forerunner 305 GPS Receiver

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