2008 Nissan 350z ECM locked with Uprev

[Project51Performance]

I have a 08 350z HR and it's been tuned previously by Uprev. I'm wondering if the stock file I found while digging through the forums will work if I buy the credits to try and rewrite the ECM, currently I'm unable to read or edit the current tune because of Uprev. The file I have is SH7058 the ECM i have is showing SH7078. The VIN doesn't really matter because the ECM been replaced before, but NATS removed by Uprev before I bought the car. Can anyone with more knowledge chime in to tell me if ill be able to reflash with the HP without removing the garbage Uprev has on it?

[Ludo80]

The only way in my opinion is to read/write in jtag. I got the case on an SH7055 and I bypassed the uprev lock with ktag in jtag.

[Zever]

I've got the same issue on an 08 350z. From what I understand they modify the operating system with their own to do away with the Nissan MBT calculations for ignition advance. I can be a bit unreliable with the trimming tables when boosted, Uprevs is pretty cool in the sense that you get what you enter as far as timing. But anyway, I couldn't read mine either. You could buy a tuner cable from uprev and use their software since the ecm is licensed or have shop that tunes with Uprev flash a stock file back in and use HPT. Personally I've had great results with my boosted Z and HPT so I'm going to get another ECM to use and maybe sell the Uprev licensed one I've got. IMO, unless you're a pro tuner for profit, Uprev is too weak or non existent with certain parameters that you might need to keep the engine light out....