I run into this once with mine at one point to plug into the computer first before the OBDII port. If I plugged into the ODBII first and then the computer I could not do a full flash. So since then I always plug into the computer then the OBDII port and no problems ever.
Brian
2007.5 GMT-900 Chevrolet Silverado 2500HD CC/LB LTZ 4x4 Summit White.
With the LMM Duramax 365hp/660tq, MW7 Allison 1000 6-speed
EFILive LMM DSP5 Settings, 500HP, 450HP, 400HP,Tow with Turbine Brake, and Stock HP.
UA Steamfitter, Local 136 Evansville, IN - Remember if you want to play you got to pay.
Full flash is only enabled when FlashScan is connected to the PC before opening the Tune Tool application. So strictly speaking not related to which end of the chain is providing the power.
Andrew
EFILive Crew
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