BRICKED(or almost) my find7a ..some help?(adb format?) topic

Hi guys,

this morning i had to the brilliant idea to go from OMNI 4.4.4 LVM into ColorsOs (chinese version) 4.4.4(not lvm..)
i did a complete wipe and COLOROS worked
but since there were few things i didn't like i wanted to re install my Nadroid backup..
so i went in recovery wiped all and re installed nandroid backup but IT FAILED

Basically the things is UNABLE TO MOUNT INTERNAL SD
i can ADB mobile on windows but (if i remove external sd card) not partition is seen

there is a way i can solve? did i just brick my phone? or i can create this internal sd card?? I can go in recovery and use ADB

thanks for you help