EFI tuners? this is a recently purchased truck and has a dsp5 knob, but my hp tuners will not pull files nor will my buddy efi software so we assume it is locked.. i have reseached and seen where even a tech 2 will not flash back re stock as well.. my question is can trying a re flash with a stock lmm program from my buddy efi setup. will it work? will it damage ecu if not, or will it just not still connect? thus leaving me with no other options except a new ecu and re flash.., Thanks if can help.

2008 lmm