Checksum Fail Fix

Is there still a checksum fail fix on V8 for LBZ E35A ECU's? I've used B9999 Checksum Fail Fix 2 on my E38 ECU awhile back but that was with V7.5. I had to use it on my E38 because I pulled the tune off my truck and it had a diablo tune on it. Truck was no start till I used B9999. I worked with Ross back then to get it figured out and I was able to fix the tune with the Checksum Fail Fix. I pulled a tune off my 06 LBZ yesterday for the first time, thinking it was still a stock tune... it wasn't. Now I have the same issue with my LBZ. I'm not seeing B9999 anymore. Is there still a fix for this? I attached the tune.

That was only for certain petrol ECM's, not the Bosch Diesel ECM's.
I see you have a support ticket, I'll deal with you via that.

Thanks!

I had a look in my E35A folder for a known good file for you to recover this ECM but I cannot find a suitable match I'm afraid.
Does anyone on here have a stock file they could please attach, here's the segments....

Boot Software 12604140
Main Operating System 12604138
Speedometer 12604118
System 12604106
Fuel System 12604104
Engine Diagnostic 12604099
Engine Operation 12604098
Engine 12604113
Secondary Operating System 12604139

Cheers,
Ross

Here is a clean file, exact match

I uploaded the exact file you need.

This is the last updated file by GM released correct for that original OS.

Thanks GMC-2002-Dmax! Do I just cal flash this tune or do I need to do a full flash? Also, I hear people talk about updating vin numbers in their tunes. Is that something that is necessary too or no?

Full flash, those are 100% stock files