I was looking into the problem and find something strange when i had the maemo25 kernel running.
I saw that it was most of the time working on 550mhz and not 599 that much.
Now i saw that something was changed from the 599 to 600mhz in the maemo27 kernel now working most of time 600mhz (don't know if the mhz change was only visual or other...) so i upped the voltage by 1 point 600:34,430 and that affected the dsp thats why i got the dsp error and media lock-up.

Device is running great now.