Mini r56 Ews problem

hi people , here is briefly the situation : 

mini r56 , owner changed battery and frm got killed and ista is showing ews manipulation (2009 car so frm3 and cas3) 

i've restored the frm and read out the cas with xprog,  a good friend  tried to fix the cas dump, wrote back but still dme shows tampering error , i've updated both cas and dme with winkfp to restore cas flash  but no luck. it won't sync dme--cas .

what is your suggestion?  still corrupted eprom on cas ? tomorrow will read it out again 


thanks for helping