That is the question I have as well.
Has anyone here tried this?
Notes to add, I never was able to get a functioning update USB stick. It would always fail saying the software was not compatible with vehicle. So I’m wondering if just the simple fact that by having it plugged in during the radio start up caused it to react just a little bit different when it’s on the white screen that says “An error has occured. Contact UConnect with the error code below. Your system will revert to its previous version.“ It was after this reboot that I got the Error 20 screen, but it wasn't an update screen, it was after the radio had booted into working firmware. Attached is the pic of that error message.
What part of that did you think would fry something? There is constant power to the screen. With the car running or not, the fuse is the only thing that cuts the power.I'm the original poster in the other forum about this issue and how I got lucky enough to bring the head unit back to life. Being well out of warranty I was fully prepared to replace the factory unit, so I was willing to take the risk of damaging it and in all honesty anything else that's on that CAN bus. Here's my original post.
Notes to add, I never was able to get a functioning update USB stick. It would always fail saying the software was not compatible with vehicle. So I’m wondering if just the simple fact that by having it plugged in during the radio start up caused it to react just a little bit different when it’s on the white screen that says “An error has occured. Contact UConnect with the error code below. Your system will revert to its previous version.“ It was after this reboot that I got the Error 20 screen, but it wasn't an update screen, it was after the radio had booted into working firmware. Attached is the pic of that error message.
Agreed, the unit has power to it unless you disconnect both batteries. In general it's never a good idea to just pull fuses on hot circuits, that's why I mentioned it. All kinds of little things can happen. Arcs, drop the fuse and it hits some other contact and shorts it out, stuff like that. Again, I wasn't terrified by that at all because I've worked automotive/avionic systems for years and in my brain pulling a fuse is no different than a manual switch if done right. Others may be terrified to be in a running engine compartment messing with fuses.
Can you please share where you got the update files from?
https://www.driveuconnect.com/support/software-update.html
Thanks. It's just odd that some VINs works and others don't.
Looks like the link is dead now, as soon as I get to my desk I’ll upload the PDF.
Here you go
That's from 2,5 years ago. Especially like the part where they knew there's a problem but tell the techs don't you dare fix it unless the owner complained first.
