As you can read i am having a hard time with some of these lmm's that are acting pretty weird and im not sure if its my set up or if everybody is having this problem but is making me worried every time i go to do one of these trucks. Ok so pretty much everytime i hook up to a lmm and just do the regular read for the trucks info i get a missing calibration and would you like to go on. I say yes and i will give me the info. Weird part is that it is only a 504k file and a lb7 file is 512k. so not sure what that is about, could be my problem right of the start but not sure. next i program the truck and i will run through and then i will start to say retrying previous block. Controller is going back to normal operation. over and over again. really fast. i stops in random places every time like the lly's do when they have something that is running like radio and so on. so i went though the motions and pulled all of the fuses except for the bare minimum and still nothing. most of the time when i do this with lly's even if i dont get the problem i am seeing it make it a little farther each time just because there is less stuff running with it. this is not the case with this truck. Lastly the truck finally stopped letting me flash it saying that the ecm was not detected and no matter what i do can not get it to detect. pulled batteries for 1hr all the way to 24hrs. nothing.

So couple questions
1. i am thinking of going ahead and buying a bench flash set up because i do enough of these trucks that sometimes it is just easier to pull the computer. but i have never done bench flashing before will i be able to resurrect this ecm or is it pretty much shot.
2. what am i missing on these lmm trucks i have done them in the past and they seemed easy like the lb7s is there something up with the new firmwire or bootloader. do i need to us v8 and not v7.5. i have all of the newest updates but maybe i need to unupdate my stuff.
i have seen alot of guys have similar problems with there trucks but does not ever seem like when they figure it out they will ever get back on and say what they did different.
any help would be great guys i have a guys truck broke down right now i am going to do what ever it takes to get it fixed but i need to know what direction to go. i dont want to just get another ecm if i can fix this one and i dont want to get another one if it is just going to get messed up like this one. i already went to do another guys lmm and it did the same thing with the calibration missing on the read. if i need to contact efi live support i will but i dont have a good way to get ahold of them so i came to you all masters of the universe. thanks again for any help.