cant write pcm

[askkmb]

Hello! Anyone knows what my problem could be? I was trying to tune my brothers truck(03 Silverado) that he recently bought, and i was able to read the pcm and modify it, but i cant write anything into it. Anyone know what that could be? Apparently theres a programmer installed into it (a handheld maybe or something) and i was wondering if thats the problem. Maybe the programmer locked the pcm or something? When im trying to write on the pcm a window comes up and says that i have no credits to perform this action, but im sure i already used credits on that pcm.
Thanks in advance.

[planethax]

post info log

[Bill@HPTuners]

If you were able to read & license the file and just not write to the pcm it sounds like the pcm might have a custom operating system applied to it.

In any even as planethax mentioned either post an infolog & screenshot of the error or simply email support and we should be able to assist you.

[askkmb]

Okay thank you very much for offering help. I think i got the problem. The lock status on the ecm is "OS locked". So im guessing that i just need to reflash the pcm and then i will be able to write on it,right? Am i still going to be able to use the same credits(considering the vin number doesnt change)?