Need firmware for Jay-tech pa1010da(wrong colors on display)

Hi. I need firmware for Jay-tech PA1010da.

I recived the tabled with problem - hang on logo Jay-tech. I have flash it with

A20_K100_K1001L1C_1308185_20131109.img

and

ik100-bt-c_tp_20131216_165325.img

Now the tablet works, but the colors on display are wrong( like negative colors on photo).

What can i do to fix it? I can't find original firmware , not even on jay-tech.de

any ideeas? :confused:

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