Front Panel not Found

I own a iPC which is v2.6 before
( old version, AMD version 1800+)

last week
I have upgraded it to the latest image
which is XPE v8.5 ( Hog 3 version 3.0.4 )

problems comes

after I clean install it
the front panel lost connections
the whole front panel has no repsonse
but the touch monitor still works

i try clean install and recover it to the old version ( v2.6 )
but after the ipc boot with the old clean install disc
it said it is a unknow console, and cant be clean install
wht can I do ?

it is very urgent since i need to use the console @ Dec

thanks a lot

Jit
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