I'm trying to diagnose a vehicle for a friend that has a possible bad ecm. I would like to overwrite a 1250216 OS with a 1250219 OS without bricking it are these close enough to be able to use?
I really wish I would have put "Operating" OS's lol
If I had to take a random guess the answer is no.
Last edited by Guy With A Chevy; 1 Week Ago at 06:13 PM.
Did you forget to do something?
screenshot.05-05-2024 23.28.03.png
IMHO never safe to overwrite a different OS in a GEN 4 unless its a custom OS from hptuners for the original OS.
About once every two weeks we see someone bricking something trying to do this.
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I'm with Alvin on this. Only OS "upgrading" should be done with SPS unless you're absolutely sure, or don't care if you brick one just trying it.
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"without bricking it".
No such thing. You take a risk every single time you program. Something can always go wrong. Battery voltage, laptop, another module happens to communicate during the write process. Lot's of stuff. Always communicate to a customer that bricking can occur.
maybe i'm missing something but sounds like the ecm may already have a problem - once this is the last resort is it such a bad thing if it does cause it to brick?
it would be as useful as a brick at that point.
Tuner at PCMofnc.com
Email tuning!!!, Mail order, Dyno tuning, Performance Parts, Electric Fan Kits, 4l80e swap harnesses, 6l80 -> 4l80e conversion harnesses, Installs
Why not use the right tools to diagnose? If you haven't got 'em, buy 'em. They're cheaper than a visit to the Snap-On truck on payday.Originally Posted by Shroomun
ATTICA! ATTICA! ATTICA!
god fucking damn it STOP AUTO-LOWERCASING MY TEXT
real edit: why did it take four edits to make it appear the way I typed it
True knowing the problem is always better than guessing and i've never been one to say no to a new tool.
What is changing the OS going to prove about a possible bad ECM anyway?
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