Tundra 4.4 w/ 3 Knobs Upgrade to 7.1 Android for AC Control Work with No Display
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Created by: Chris Shao
Modified on: Wed, 20 Feb, 2019 at 12:20 PM
Need to do vwairboxupdate.bin from Nov 30 YouTube Video
With the 4.4 CPU Board still installed
https://www.youtube.com/watch?v=LV7PK-Yamfk
After doing YouTube Video - Install the 7.1 CPU board
Then install this link
Download and update unit
http://en.mail.qq.com/cgi-bin/ftnExs_download?k=5135386132d1ecb3158fea584533054b03510d00500607071b040e56541e0301010d155905575449050108590706075200040c076301371146515915066c450f464d0b3e025d5316595c5c564d02685506070c1954050f3b858087803c0107550f050951561d4505443505&t=exs_ftn_download&code=658ac37d
01/09/2019
If still some issue
Check if settings are correct
Tundra Lo
Default
38400
38400
ChuangYuanTong with BNR
38400
38400
or
38400
19200
Chris is the author of this solution article.
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