Relock Y300 Bootloader I have hauwei Y300-0100. I unlocked Bootloader Of My phone before for root it.
Now i want to flash my phone with stock rom but i cant. I tried to lock my phone with fastboot but i gave an error:

I cant solve this problem and i dont have access to phone menu. I have access to TWRP recovery.
How can i lock Y300 boot loader?
or How can i install stock rom on unblock phone?
note:


  system and data folders wiped and there is no data in this folders. My phone is freezing between first logo and welcome picture (A block screen)
solved = 
fastboot oem relock "xxxxxx.."
xxxx.. = 16 digital code
But if you flashed custom recovery or boot before
you cant relock it