Hello guys.
I have a problem with my tecno y4
firstly, i flashed a baseband zip and it success but not. after it i got a problem /system /data /cache can't be mounted or wiped.. 0 storage
i tried all ways but only system is mounted after changed the format of it to ext2 then ext4 again but the /data and /cache still the same can't be wiped or anything....
i don't have any backup

i have the stock rom but i have another problem with my phone it's not connected to pc i guess there's a broken ic or ship because it's only charging and pc can't detect it.. all i have now is twrp 2.8.2.0 and i'm stuck..
should i throw my phone??
please help me. and sorry if my thread in wrong section.