Hello,
Yes it is a custom board.
We devellop it by the begining of this year.
We made all the software devellopment without any problem with MCUExpresso and P&E Multilink universal.
Then now, to deliver the first two prototype to our customer, we use our mass production tool: Cyclone FX.
(Like many other product based on kinetis)
The first Cyclone FX programmtion was Ok, but I need to update the software of this board (flash from v1.0.0 to to v1.0.1)
It is at this time I seen I can't flash it again with error $00000007, then the MultiLink universal cans't access also.