IQ250 problem - stuck camera

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for the second time since I bought the iq250 back I am having a serios problem -

first the button is pressed but the camera won't take the photo

then even after refreshing - batteries , CF card , re attaching lens and back - the shutter of the 645 DF+ remains up and does not go down.

and then the camera is "paralised"

for the first time I had to send the back to Denmark but they said it had a firmware update ( which I did myself)

now for the second time I am a little out of answers

also there is and icon in the viewfinder that looks like this - -u-

( needless to say the camera works fine with other digital backs and lenses , the problem is in the back )

(almost every photoshoot day comes with its errors and malfunctions ... )

[Drew]

Can't say we've ever seen the same.
There are quite a few details that are missing here and a lot of tests we can do to narrow it down.

Contact support and we'll get into it.