I have successful reflashed both EEPROM and EPROM but only in galletto boot mode. I bought a second ECU after trying to reflash 800BB in galetto (without bootmode) it writes the whole rom, i can read it back and its fine... But when i give it the 20 seconds to update the EEPROM it screws it all up and wont start. When i just do boot mode, no problem other then i have to open the ECU to make adjustments which is a PITA. PITA aside though there must be other people reflashing 7.1.1 with nefmoto and my question comes after these facts.

1) I have an ECU that had a (unitronics) reflash on it (old)
2) I bought a new ECU that was stock (Rom compared to stock rom i got off here)
3) I updated the Immo and the rest of the EEPROM and bootmode flashed that.
4) Car started on new ecu.

When i go to reflash with nefmoto it says security access denied. on both ECU's. But again i thought from my reading that if i could bootmode a new EEPROM / Eprom on the car that i know was stock these issues would go away...  Am i missing something because i thought the security gateway was on the ECU and only related to EEPROM and/or Eprom.....

I dont mind limping through this bootmode reflash method as its way the heck faster... but i also cant use nefmoto to log which is my next big issue.. (AVCS isnt logging correctly in Rosstech)

I know my buddies B6S4 was reflashed successfully but idk if they used MPPS/nefmoto/galletto....

Any advice would be great or where i should look next?

Currently im running the new EEPROM with Only the following updated (i redid it after you said this to confirm)

VIN
SKC
Immo ID
Cluster Code

I ran it through the eeprom check sum fixer. Then I reflashed EEPROM thinking maybe i did copy too much. Car starts but still has security access issues...

Rom - 0030 rom not the original 0010 rom but its a rom off an unlocked ECU that I have here. There is no section in FF that says noread or noretune

Both are attached here so you can see them if that helps...

I am granted Security Access for a write, but unable to upload and unable to confirm memory module. on Logging it says security access issues when i go to start logging. it connects to the ECU on slow init though.

Attached. Console is what i see on the screen, Log is the logs from just what i did now.

Thank you again aef btw..

But to my knowledge the new ECU/EEPROM software has not been reflashed by an aftermarket company... unless this new ECU i got is also mapped or was mapped at sometime...

Im positive the ROM is not aftermarket... which only leaves the EEPROM messed up still.. Is there a way to prove a part of the EEPROM is still corrupt from stock?

I guess i will have to wait for my buddies ECU to go back to stock. its been reflashed with NefMoto in the past... successfully without boot mode. I just really wanted to understand what i was doing wrong if anything.

Can you link me to a place to read about ST10 so i can confirm / deny if thats the issue?