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
     
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  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
     
  10. John kverneland

    John kverneland Well-Known Member

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    Had the same problem a few weeks ago. I use it for coverage mapping while one passing.. Had 9 satellites available and no coverage. Clock in the drill is wrong as well it said I was sowing at 50k at one stage..
     
  11. declanc304

    declanc304 Well-Known Member

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    A friend has an EZ guide 250 here and it is saying no gps position or cannot set A low gps quality when we try set AB line. Is it just an update thats needed or something else?
    741BED41-D9E0-4D28-9265-1F06AF397A58.jpeg D1D33FCF-5836-4862-A6D6-88DC51E536A2.jpeg AA7FCBA0-1665-47F9-9496-A60FB86AE72C.jpeg 31E4C800-48BF-41B2-85FC-95454E099539.jpeg
     
  12. massey 6480

    massey 6480 Well-Known Member

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  13. marco

    marco Well-Known Member

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    All the info you need is here. You probably can find the firmware just by google. Try find it in a non zip form. The reciever will detect the software and should start the update automatically
     
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  14. declanc304

    declanc304 Well-Known Member

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    Do i just plug in a usb to a laptop to download it or do i plug in d gps unit?
     
  15. marco

    marco Well-Known Member

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    https://drive.google.com/file/d/1yeXq5JPJMDccQc2uYLKPPvev9_2NOmRx/view

    you need to download this file, unzip it and put it on a usb stick. i had to try a few to find one that worked with my ez 500, to the point that i have to try my current usb a few times before it works. if its done right the 250 will read the firware and ask do you want to upgrade
     
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  16. marco

    marco Well-Known Member

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  17. declanc304

    declanc304 Well-Known Member

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    Thanks sorry for more questions now but will any usb stick do d job? I have a few here i can wipe everything else off of for d job
     
  18. marco

    marco Well-Known Member

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    google "trimble ez guide 250 manual" and the manual will talk you trew it. Usbs need to be formatted to fat/fat32. It's hard to explain.
     
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