Trimble GPS unable to lock signal

Discussion in 'Farm Technology' started by towbar, Oct 22, 2018.

  1. towbar

    towbar Well-Known Member

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    Changes in the GPS satellites used for transmitting EGNOS signal correction information means some of the older Trimble GPS's are having problems getting a corrected signal. Trimble have released a firmware update for EZGuide 250 and 500 which seems to address the issue. Officially available only from dealers but a guy on TFF kindly posted it here and I can confirm it worked for me.

    https://www.dropbox.com/s/vzrk5vzf5z8bv6b/EZGuide_250_500_Software.zip?dl=0
     
    drew likes this.
  2. marco

    marco Well-Known Member

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    How do you extract that to a usb?
     
  3. drew

    drew Well-Known Member

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    Thanks for that, was driven mad on Friday waiting for it to lock signal. Eventually dropped from accuracy to availability and it picked up signal then changed back!
     
  4. towbar

    towbar Well-Known Member

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    Extract the files from the zip and copy the English img file for whichever model you have to the usb
     
  5. SMID

    SMID Well-Known Member

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    I,v a Raven Enviso and 2 ancient Patchworks, the ones using a Garmin palm held they seem to be working ok ,just wondering if I,m missing something baring in mind I,m in South West Scotland?
     
  6. towbar

    towbar Well-Known Member

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    They may not be using the correction signal?
     
  7. SMID

    SMID Well-Known Member

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    Ha ,spoke too soon just checked Envizo , no differential ,Blackbox showing an accuracy figure of 5.8 feet .​
     
  8. Saw

    Saw Member

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    Would the above firmware update resolve the issue with an FM-750?
     
  9. towbar

    towbar Well-Known Member

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    No but I believe 750 firmware has being released also but not sure if its on public download or dealer only
     

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