Bricked Nexus 4

Hey guys i got a friend's nexus 4 to repair, he said his phone memory was full and then suddenly something happened and then he restarted the phone and since then he is not able to get in, i opened the recovery and saw that all the phone partitions are corrupted because i was not able to mount them or factory reset the phone from there went into bootloader mode and the phone was locked tried to unlock it but it didn't unlock perhaps due to corrupted partitions?

So now my only concern is that, is there anyway i can still repair the phone with locked bootloader? Because with locked bootloader i am not even able to format the partition

Thanks