Phone stuck at fastboot
My zenfone ze550kl laser are stuck in fastboot mode, can't go to recovery or any thing, using the adb and fastboot i can flash boot.img, system.img etc. but nothing happens. and the bootloader are locked too, and i don't find some way to unlock without the app from asus, tried to put 'fastboot oem get_unlock_ability' or 'fastboot oem unlock' but i just receive 'FAILED (remote: 'unknown command')'
i don't know what to do, someone know what i can do? pls
oem device info
(bootloader) Device unlocked: false
(bootloader) Charger screen enabled: false
(bootloader) Display panel:
(bootloader) Adb Enable: 0