The CMU update process is indeed very badly designed, as it has plenty of failure points where it ends with a bricked device that will not boot anymore. Thanks to this website: it saves me a lot of time to dig on how the system works. Luckily there is a way to recover, which is not so easy to do, bit it's quiet doable if you are not afraid to unmount the CMU, open it and plug some wires. I did the exact same thing as you where my car was turned off just after installing the failsafe package. Is there a way to safe my system or should the dealer do this thing?Īctually, your CMU is bricked. I've searched the forum for an solution and found out that there is way over SSH. Nothing happens.Īlso the soft reset (BACK + MUTE + NAV) changes nothing. I've tried to reset the whole system over the settings menu. Radio is still working and chaning the Volume works. So i pressed the Start-Stopp Button one time and the Screen remains black. ![]() I wanted to check the USB stick on computer if there is anything wrong. After that i tried to another time so pressed the Start-Stopp Button and the MZD comes up. ![]() ![]() ![]() So i pressed the Start-Stopp Button another time so the ignition goes on and turned off the car. After that i wanted to install the reinstall package but an error came up "Failed to validate package certificate". I pressed the Start-Stopp Button one time and successfully installed the failsafe package.
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