Unknown Rom Definition?
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Joined: Sep 2005
Posts: 240
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From: Southeast, PA
Unknown Rom Definition?
The first time I have encountered this. I just got my new evo so I wanted to see what the tune was like even though it was supposed to be done by Sean Ivey. Just installed ECUFlash 1.35 after having some connecting problems with 1.29 (yeah I know, I am out of date lol). Install went fine. Connect the car up , read the rom and try and open the rom. When I open the rom I get a screen with (3) options saying unknown rom definition. I have the metadata table pointing to the correct folder rommetadata. The 3 options are something like abort rom with no chance of saving, open rom with no viewable tables but can save and the last one was something like edit rom as a developer blah, blah. I chose to open it as a developer, gave it a internal id of what my other car was and opened and it seems fine as far as fuel, timing, VVT tables, etc. The problem is if I make changes I am afraid that I might have missed something and lock out my ECU when I go to write the Rom back to the ECU 
. Anyone have any info or suggestions for me, it is much appreciated 
.
. Anyone have any info or suggestions for me, it is much appreciated .
Last edited by fid; Jul 12, 2008 at 06:50 PM.
A common "copy-obfuscation" (I can't bring myself to call it copy-protection) method employed by a few notable tuners is to change the ECU ID to either a different model, or to something bogus entirely.
As long as the ECU ID you changed it to matches what the car ought to have had from the factory (and as long as all the tables look right; open up fuel, timing, etc. tables and make sure you don't have crazy numbers for scalings or values), you're probably good.
You certainly won't "lock out your ECU". You might end up with a car that won't start, in which case you just flash the backup you've made back to the car.
As long as the ECU ID you changed it to matches what the car ought to have had from the factory (and as long as all the tables look right; open up fuel, timing, etc. tables and make sure you don't have crazy numbers for scalings or values), you're probably good.
You certainly won't "lock out your ECU". You might end up with a car that won't start, in which case you just flash the backup you've made back to the car.
A common "copy-obfuscation" (I can't bring myself to call it copy-protection) method employed by a few notable tuners is to change the ECU ID to either a different model, or to something bogus entirely.
As long as the ECU ID you changed it to matches what the car ought to have had from the factory (and as long as all the tables look right; open up fuel, timing, etc. tables and make sure you don't have crazy numbers for scalings or values), you're probably good.
You certainly won't "lock out your ECU". You might end up with a car that won't start, in which case you just flash the backup you've made back to the car.
As long as the ECU ID you changed it to matches what the car ought to have had from the factory (and as long as all the tables look right; open up fuel, timing, etc. tables and make sure you don't have crazy numbers for scalings or values), you're probably good.
You certainly won't "lock out your ECU". You might end up with a car that won't start, in which case you just flash the backup you've made back to the car.
.See here:
https://www.evolutionm.net/forums/sh...ght=scrambling
The link in Post 11 is of some help.
Last edited by codgi; Jul 13, 2008 at 11:43 AM.
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