System Blue GPS problem

[piepants]

Yup, that bug is fixed in newer firmware, so updating with one of the files DnH2016 linked will fix the issue permanently.

Just ensure you use a "Blue" firmware. Go to the controller page, click the Tools menu, then the "Firmware" button. Select the file you downloaded and follow the prompts!

[Steve-]

It has been running fine since the PMTK352,1 command, so you were onto it.

I have now upgraded to

• Firmware Rev. 8.2 BLUE / Sep 29 2016 14:10:51
  

see how that goes.

Thanks for your help.

[DnH2016]

Looks like you are in business... detecting strokes already!