MMX S300 7715 emmc cft not calibret

MMX S300 7715 emmc cft not calibret

i got set hang on logo

i try to flash with cm2 but cm2 say it bad file

then i flash with OG tool

in OG tool give error backup nv

then i untick backup and flashed

then set on and ok but on screen show cft not calibaret

i need nv or any other soluotion for this