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Discussion Starter · #1 · (Edited)
For those still wanting to use the ITC receiver for whatever reason, John Deere has just released a fix for the issue of not reliably getting WAAS, and in Europe not getting EGNOS at all. The issue came down to some hard-coded identifiers that the WAAS and EGNOS satellites used, which are now retired and replaced with newer satellites (not GPS satellites, but the geosynchronous satellites that broadcast WAAS and EGNOS). The firmware can be downloaded here:
https://isgsupport.deere.com/dtac-files/3.73J.zip, and you can update with a GS2 or GS3 display. Before updating, be sure to unplug any device that is faking SF1 for autosteering like the homemade waas_steer device, or ITC Extender. Not doing so could brick the receiver. After the update is complete you can use the device again (pretty sure anyway!).

TO UPDATE: (Be sure Original Greenstar Display emulator is turned on)

1. Download the new software .zip file.
2. Unzip the file to a known location.
3. Format a USB drive (GS3) or Flash Card (GS2).
4. Run GS Live Update on the USB or Flash Card.
5. Copy the .GST file from the downloaded .zip file onto your USB or flash card and put it in the PROGRAMS-->RECEIVER folder.
6. Insert your USB or Flash Card into the display.
7. Cancel the update pop-up and warning messages.
8. On your display, navigate to Menu, Message Center.
9. Click on Reprogram (softkey A).
10. Select GPS Receiver and click Reprogram Device (softkey E)
11. In the "Change to Version" dropdown select "iTC_v3_73J.GST" and click Accept.
 

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Discussion Starter · #4 ·
That's correct, unless you're using the ITC Extender or equivalent.

I tried it tonight and it works as advertised. Acquired WAAS after just a few minutes and no other functionality was removed. The ITC Extender (well my own home-made version) still works also, which is good news for folks who want to keep using the ITC for a few more years.
 

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That's correct, unless you're using the ITC Extender or equivalent.

I tried it tonight and it works as advertised. Acquired WAAS after just a few minutes and no other functionality was removed. The ITC Extender (well my own home-made version) still works also, which is good news for folks who want to keep using the ITC for a few more years.
Good day
Can you please be so kind to tell me how you made your own itc extender. I would really like to use my it again

JJ Lyon
 

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Discussion Starter · #7 ·
Where are you located? While a homemade extender can trick it into steering with any GPS quality, unless you can get either WAAS or EGNOS (the only systems that ITC can work with) satellite corrections, steering performance will be very poor. WAAS covers only North America, and from what I understand, EGNOS covers only Europe and parts of North Africa. That limits where the ITC Extender, or a homemade extender, can function.
 

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I'm from South Africa
As far as I'm aware we should have WAAS signal.
Correct me if I'm wrong but I think an itc extender tricks the system into thinking it is using waas signal meanwhile it is using sf1
But I think we do have waas signal so I would like try.
 

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Discussion Starter · #11 · (Edited)
I'm from South Africa
As far as I'm aware we should have WAAS signal.
Correct me if I'm wrong but I think an itc extender tricks the system into thinking it is using waas signal meanwhile it is using sf1
But I think we do have waas signal so I would like try.
It's the opposite. The extender fools the tractor into thinking the receiver is getting SF1 when in reality it is hopefully getting WAAS or EGNOS. SF1 is higher quality than WAAS or EGNOS, and that is what stopped working on the ITC.

Send me a pm with your e-mail and I can discuss it with you what hardware you would need to make one.

Even without the extender you should be able to turn on your ITC and see what kind of signal you are getting on your John Deere display. If it never says anything more than 3D+, then you're not getting corrections. It's possible that Deere receivers call any system WAAS even if it is really EGNOS. So if you see WAAS 3D then you're for sure good.
 

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It's the opposite. The extender fools the tractor into thinking the receiver is getting SF1 when in reality it is hopefully getting WAAS or EGNOS. SF1 is higher quality than WAAS or EGNOS, and that is what stopped working on the ITC.

I know for fact you have no WAAS coverage. That's north america only, covered by three geosynchronous satellites and using ground stations in the United States and Canada. EGNOS I'm not sure about; you might get some coverage down there. I'm getting conflicting information from Google searches! Send me a pm with your e-mail and I can discuss it with you what hardware you would need to make one.

Even without the extender you should be able to turn on your ITC and see what kind of signal you are getting on your John Deere display. If it never says anything more than 3D+, then you're not getting EGNOS corrections.
Ok thank you
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É o contrário. O extensor engana o trator pensando que o receptor está recebendo SF1 quando, na realidade, espera-se que esteja recebendo WAAS ou EGNOS. O SF1 é de qualidade superior ao WAAS ou EGNOS, e foi isso que parou de funcionar no ITC.

Envie-me uma pm com seu e-mail e posso discutir com você qual hardware você precisaria para fazer um.

Mesmo sem o extensor, você poderá ligar seu ITC e ver que tipo de sinal está recebendo em seu monitor John Deere. Se nunca disser nada além de 3D+, você não está recebendo correções. É possível que os receptores Deere chamem qualquer sistema de WAAS, mesmo que seja realmente EGNOS. Então, se você vir o WAAS 3D, com certeza é bom.
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