AVH 5700 BHS - Remove "CAUTION - SCREEN IMAGE MAY BE REVERSED" text overlay on backup camera

[maurososo]

Hello, I really need to remove this message, I want to set up a TPMS system and I don't want this message appearing on the screen. I found this post but I can't get into Testmode in my unit:

 

http://avic411.com/index.php?/topic/34244-guide-x930btx940bt-remove-caution-screen-image-may-be-reversed-text-overlay-on-backup-camera/

 

If anyone can help me, that would be great! Thank you, regards!