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Hi, I have a PCM that has a HPT tune in it. I tried to flash an efilive tune and OS into it but it says its locked. I phoned the tuner that originally tuned it with HPT to ask if this was the case. He said that he never locks his tunes and that due to the fact i have now tried to talk to it with Efilive the PCM is trashed. He said that even HPT would not be able to communicate with it now and I will need a new PCM. Is this the truth or am I getting fed BS?
Cheers
"reading" - no.
"Writing" - well that's an interesting thing. If the PCM came up as locked, then EFILive can't write to it, so can't brick it.
You could try a full power reset on the PCM, but I'd wait and see what advice some others may bring.
Simon.
If it's a HP COS then you can't read or write to it but it shouldn't brick it, you'd need to revert to a non COS using HP Tuner then you can use EFI-Live to read/write.
ya custom os is no go - but they dont brick have done a couple of trucks with both
efi live way better for vve but some pids were only avalible to change with hp tuners
No worries cheers. Will get a standard tune flashed back in with HPT and try again with efilive.