I had the main master switch on the pillar on and lite up. Tried with and without the faststeer button engaged. Ive had everything steering but could only engage via the tablet.
Had joystick button set to autosteer aswell.
This is the teensy firmware i used
I have same issue on MF6718 steer ready. I got the advice to engage aog first time with button on pcb, after that joystick button should work. Haven’t tried it yet but it is worth a try.
Yea that one will never see the icon engage message. It needs the icon engage message added. You could have a look in my version and copy the icon engage part I added to the aio firmware. There is also the can filter to copy too.
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I can see the different engage messages to my firmware. I take it that firmware wont work with the micro 4.1 aio board as its says v4.5.
Just add that extra vbus 2 engage line code to my code and save it and re upload the firmware to my teensy is it?
Try this one. I have copy and paste the icon parts. Try it and let me know if it works.
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Thankyou very much, brilliant. 
Will update the firmware and report back when i get chance to try it
Finally got round to testing this code today and i can 100% confirm that this extra code does engage the steering via the joystick on the jcb 4220 icon model. This is using the aio 4.1 micro board.
Many thanks @RGM
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