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roughneck427
February 12th, 2013, 10:25 AM
I have a LB7 ecm service number 12210729 it has been licensed and im using a standalone harness to program. All my software and firmware up to date. The serial number keeps reverting back to a bunch of zero's when i do a full flash it assigns a unique serial but when i go back to do a partial flash its zeros again.
killerbee
February 13th, 2013, 01:55 AM
Does your harness have "ignition power" that you can turn off? are you waiting for the countdown?
roughneck427
February 13th, 2013, 05:31 AM
Does your harness have "ignition power" that you can turn off? are you waiting for the countdown?


Yes i do and have flashed many others on the same harness
GMPX
February 13th, 2013, 09:08 AM
Have any of them been flashed with TIS as well? TIS is known to wipe the serial numbers etc on the 01 ECM.
roughneck427
February 13th, 2013, 09:13 AM
Yes it was flashed with TIS and after reading it does blow the vcm id out. Is there any way to repair this?? Whats wierd i have licensed it before and it doesnt ask to license it again with the zeroed out serial.
GMPX
February 13th, 2013, 10:34 AM
It can't be repaired I'm afraid, TIS corrupts it in some way that the ECM wipes a lot of data out. Under certain circumstances (such as these TIS corrupted ECM's) EFILive will accept the zeroed serial number as a valid license, unfortunately it's a common problem and we thought it was only fair to allow people to still flash the ECM in that condition. AFAIK, it is only a problem on the 01's, maybe the early 02's as well. And, you certainly will cause corruption if you flash a later model OS in to the early ECM.
astolte2
July 16th, 2013, 08:25 AM
It can't be repaired I'm afraid, TIS corrupts it in some way that the ECM wipes a lot of data out. Under certain circumstances (such as these TIS corrupted ECM's) EFILive will accept the zeroed serial number as a valid license, unfortunately it's a common problem and we thought it was only fair to allow people to still flash the ECM in that condition. AFAIK, it is only a problem on the 01's, maybe the early 02's as well. And, you certainly will cause corruption if you flash a later model OS in to the early ECM.

got efi live for my truck tried to read and said ecm was locked got a reman ecm and tried again this time it red it but would not do a fulldsp5 came back with bad SN and error code $0534serial number on the ecm looks like (~~~~~~~1~~~~~~~)
GMPX
July 16th, 2013, 12:23 PM
TIS corrupted as some stage as well I'm afraid, if it's in a locked state there isn't much EFILive can do.