Reader Upload Request :x7F Negative Response Code Error

Modified on Tue, 21 Nov 2023 at 01:32 PM


If you receive the Reader upload request :x7F negative response code error, this likely indicates your vehicle has been previously tuned and the ability to read the tune has been disabled.


1.Please start a Support Ticket.
2.Obtain a VCM Suite Infolog while connected to the vehicle.
3.Locate and prepare a Debug.dat file from your PC. This is located in Documents > HP Tuners > Settings.

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