So i got my ecu bricked and i got it fixed. Before it vcds didnt see the ecu when it was in the car and now it does. Also nefmoto flasher sees it and write it. I used mpps v13 to read/write flash and when i modified the stage 1 tune that an other tuner did and made it in to a a stage 1+pop and bang tune. In mpps the check sum button wasnt awailable so i tought it might be available when i press write. So i pressed write, choose the stage1+pop and bang.bin and it started writing to ecu without getting a chanse to checksum correct it. Then car cranked but didnt start=bricked.

Now i was able to write an stock original file to the ecu and it got it fixed. vcds is able to read fault codes when the ecu is in car, nefmoto connects in just a few seconds. So what i did with the ecu now is i checksum corrected the stage1 + pop and bang bin in mpps and used the stage 1 bin as "original" bin since that was on the car before write and worked perfectly. Mpps fixed 8 errors in checksum and i double checked so that i checksum corrected thath already corrected bin with the stage1 bin and said 0 errors. so it did it job.

I opened nefmoto chosed my bin and the correct memorylayout (29f800bb) and did a full write. It didt it without any problem. Problem is that vcds days in ecu fault codes error p0601-Internal Control Module: Memory Check sum Error. what is the problem? I checked what version immo i have immo1. So i wouldnt be pairing the cluster and ecu together but the ecu itself to car? after the write i checked again the cluster if any fault codes appear and it did and its this:engine control module- 49-10 no communication - intermitted. i cleared fault codes in there and it was gone. could be the flash done it? i also checked readyness in engine tab and it says this: readiness status:0010 1100, exhaust gas recirculation:passed, Oxygen sensor heating: passed, oxyen sensor(s):fail or incomplete, air condition:passed, secondary air injection:failed or incomplete, evaporative emissions: failed or incomplete, catalyst heating:passed and catalyc converter(s):passed.

this is all i have gathered information. I have been fixing this ecu tune problem for about 5 days nonstop, even after work till the night. Im sharing the bins that i read from ecu that was already on it and the one i have and supposed to be checksum corrected. If anyone could tell me what i need to do to fix this would be greatly awesome.

car info: audi a4 b6 2001 quattro
1.8t awt
ecu:8E0906018B  0003

problem is fixed. I gave up trying to fix checksum becuase mpps v13 is a failiure of a soft and i dont know YET how to fix hex codes. But the tuner said the check sum of the ecu bin flash was incorrect (checksum "corrected" with mpps v13) and so was the eeprom(95040) checksum. The tuner also said (before i went to my appoint ment there) the eeprom could have a "deathcode" in it. Basically wrong checksum in eeprom and gets a deathcode in to hex which caused the p0601 error in vcds. He checksum fixed ecu bin and eeprom, turned immo off and fixed the death code

He knew how to do it because he made the same mistake when he started out, and also 3 other people done it too before me and all were mpps v13. So im not using mpps v13 anymore. He said to use kess v2 as its the best home tuner tool to read/write flash and do checksums. Now he has a lot of tools to fix ecus and tune them so he know  what hes saying.

disabling immo is also totally retarded IMHO, why not just fix the deathcode and that's that?

Check the vin number bet it would be filled with all XX. If it is he just used the generic immo off that was posted here 12 years ago