Hey,
Just got around trying to read a 2006 Dodge Ram 2500 5.9 ECU.
Previously Smarty JR tuned, but returned to stock for the purpose of reading the PCM, as we tried to read the Smarty tune, but the HPTuner wrote
"Reading has been disabled in the tune. Failed to read"
Haven't found any information about this issue, so asking here to see if anyone ran into that before !