Bootloader Error

[Hawk355]

I downloaded a friends 2003 lb7 calibration, made my changes, then tried to upload the modified calibration and I got a bootloader error message. It also said the ecm was locked. I checked the Pcm Security tab and it says it is unlocked. The seed is $3125. He told me that the dealer replaced his dash gauges last year and had to reprogram them a few times before they would work properly. He has never plugged in any type of programmer himself and as far as I know he bought the truck new. I also tried to download the stock calibration from the truck again and I got the same type of error message. What do I need to do to recalibrate his truck?

[GMPX]

That is a bit odd indeed.
I would try pulling power to the ECM for a minute and retry.

Cheers,
Ross

[Jared Duramax]

i have this same issue about every third time i upload a tune that i created. it tells me that the ecm is locked and may be damaged. i have been able to do a full system reflash and get it back to normal. but once i had to buy a new ecm. that was a very expensive day.

Jared

[JOHNBOY]

I am having the same basic issues with a loaded. The gage cluster has been replaced by the dealer. No matter what I tried it gave me a bootload error. I tried and tied no luck.

Any ideas?

21:23:17.500: Scanning for EFILive FlashScan V1 USB
21:23:17.531: Current protocol set to: "SAE J1850 VPW"
21:23:17.593: Interface firmware version: 1.2.17
21:23:17.625: Interface firmware model: FSP
21:23:17.640: Interface firmware version: 1.2.17
21:23:17.656: Interface firmware date: Jan 18, 2005
21:23:17.687: FlashScan serial number: 003563878991
21:23:17.703: Disconnecting ...
21:23:17.718: Disconnected
21:23:18.343: Scanning for EFILive FlashScan V1 USB
21:23:18.468: Current protocol set to: "SAE J1850 VPW"
21:23:18.531: Interface firmware version: 1.2.17
21:23:18.609: Current protocol: "SAE J1850 VPW"
21:23:18.656: Interface firmware model: FSP
21:23:18.671: Interface firmware version: 1.2.17
21:23:18.687: Interface firmware date: Jan 18, 2005
21:23:18.718: FlashScan serial number: 003563878991
21:23:18.843: Getting status...
21:23:18.906: Status: OK.
21:23:19.828: Bootloader version: DLB7_v1.2R (048E-5FB7)
21:23:19.828: Preparing ECM for reading flash...
21:23:19.875: ECM not secured
21:23:19.890: Initializing ECM...
21:23:20.703: Initializing ECM, step 1 of 4
21:23:20.718: Initializing ECM, step 2 of 4
21:23:21.531: Initializing ECM, step 3 of 4
21:23:23.093: Initializing ECM, step 4 of 4
21:23:23.375: ECM lock has been re-armed, attempting to unlock ECM again...

21:23:23.406: ECM not secured
21:23:23.421: Initializing ECM...
21:23:24.187: Initializing ECM, step 1 of 4
21:23:24.203: Initializing ECM, step 2 of 4
21:23:24.968: Initializing ECM, step 3 of 4
21:23:26.484: Initializing ECM, step 4 of 4
21:23:26.781: ECM lock has been re-armed, attempting to unlock ECM again...

21:23:26.937: Initializing bootloader...
21:23:27.015: Error: Failed. Controller has returned to normal operation, please retry the operation.
21:23:27.250: Initializing bootloader, step 1 of 3
21:23:27.265: Error
21:23:27.265: Disconnecting ...
21:23:27.296: Disconnected
21:23:39.609: Done!

FWIW I am running a V1 with 7.5.1 software. I flashed my 02 several times without issue today. I also managed to sucessfully log and read the codes on this 03. All I want to do is shut the EGR code off as he has installed a blocker plate.

Thanks for your help.

[Jared Duramax]

your ECM is probably fried but try disconnecting the batteries first and unplugging the ECM for about an hour of two and try it again. make sure you have all acessories unplugged and or fuses pulled to them.

[Cougar281]

your ECM is probably fried but try disconnecting the batteries first and unplugging the ECM for about an hour of two and try it again. make sure you have all acessories unplugged and or fuses pulled to them.

That won't work. His ECM is done (Johnboy's, not Hawks). Basicly, the seed/key pair got wiped, so there's no way anything will connect to the ECM for programming. I had the same thing happen last week (See my "LB7 Read issues" Thread a few down).

[McRat]

I've seen lots of trucks say "Locked ECM" when they aren't:

Unplug cable, shut off computer, turn off truck.
Remove power to any remote start, aftermarket stereo, alarm system.
Remove all harness boxes, Edge, Banks, etc.
Boot computer, plug in cable, turn key to RUN.
Launch Tune software. Open stock file. Flash>Full Flash including O/S.

This has fixed all so far that I've run into.

[Blacky]

That won't work. His ECM is done (Johnboy's, not Hawks). Basicly, the seed/key pair got wiped, so there's no way anything will connect to the ECM for programming. I had the same thing happen last week (See my "LB7 Read issues" Thread a few down).

If you ever suspect the ECM has had its seed key erased please try one of two things:

1. Try checking the "Use Alt keys" check box.
or
2. Try entering a value of $FFFF for the key.

When the seed/key gets wiped (by a bug in GM's TIS) the value of the seed and key get set to Seed=$FFFF and Key=$FFFF. Since flash memory erase value is $FF.

You can tell if the seed/key has been wiped because when EFILive displays the seed (just before attempting to unlock the ECM) it will show the seed value as $FFFF.

Regards
Paul

[Jared Duramax]

now i am going to have to try out my bad ECM and see if i can get it back to life again

Thank You

[JOHNBOY]

your ECM is probably fried but try disconnecting the batteries first and unplugging the ECM for about an hour of two and try it again. make sure you have all acessories unplugged and or fuses pulled to them.

Truck runs and drives. I can log, read codes, and erase them. The ECM is not fried it just scrambled somehow.

That won't work. His ECM is done (Johnboy's, not Hawks). Basicly, the seed/key pair got wiped, so there's no way anything will connect to the ECM for programming. I had the same thing happen last week (See my "LB7 Read issues" Thread a few down).

That pretty much says it.

I've seen lots of trucks say "Locked ECM" when they aren't:

Unplug cable, shut off computer, turn off truck.
Remove power to any remote start, aftermarket stereo, alarm system.
Remove all harness boxes, Edge, Banks, etc.
Boot computer, plug in cable, turn key to RUN.
Launch Tune software. Open stock file. Flash>Full Flash including O/S.

This has fixed all so far that I've run into.

I can not get the stock file out of it to do a full flash. Any chance I can do forced flash of the OE software with a Tech II?

If you ever suspect the ECM has had its seed key erased please try one of two things:

1. Try checking the "Use Alt keys" check box.
or
2. Try entering a value of $FFFF for the key.

When the seed/key gets wiped (by a bug in GM's TIS) the value of the seed and key get set to Seed=$FFFF and Key=$FFFF. Since flash memory erase value is $FF.

You can tell if the seed/key has been wiped because when EFILive displays the seed (just before attempting to unlock the ECM) it will show the seed value as $FFFF.

Regards
Paul

Thanks Paul. I tried the Alt Keys trick yesterday. No luck. No luck with the $FFFF key today either.

This is my brother-in-laws truck. All we want to do is shut of the EGR insufficent follow error to put out the CEL. He has an EGR blocker plate installed. I am thinking that to a tick from Fingers or an different ECM is going to be needed. Unless someone has more ideas to try.