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Any new way to donwgrade uconnect 8.4?

1K views 1 reply 2 participants last post by  _scorpion_ 
#1 · (Edited)
I have JGC SRT from 2016 and i want to downgrade uconnect 8.4 to 16x.x.x. I lost my srt pagest on uconnect after updating to latest firmware. 17.xxx. When i put USB with previous version i can't do nothing.
EU version of SRT and Uconnect Harman.
Is there any new way to do this without dealer?
 
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