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Thread: Cant read 2013 e550. m278 med17.7.1

  1. #1
    Potential Tuner
    Join Date
    Nov 2016
    Posts
    6

    Cant read 2013 e550. m278 med17.7.1

    I try to read the ecm. It says i need to update to be able to read. It fails on the software update. It says it fails to read flash. What do i do now?

  2. #2
    Potential Tuner
    Join Date
    Feb 2020
    Posts
    2
    Did you figure something out?? I am having same problem.

  3. #3
    Potential Tuner
    Join Date
    Nov 2016
    Posts
    6
    No but I think its because it tuned already. Im gonna try to flash back to stock and try again.