Motorola Moto G — Moto g5s plus - Start up failed bootloader

O celular do meu sobrinho está com esse erro e não inicia.
![image][1]
Quando tento instalar uma room dá o seguinte:

D:\Downloads\CEL\platform-tools>fastboot devices
3072d3db fastboot

D:\Downloads\CEL\platform-tools>fastboot oem fb_mode_set
...
FAILED (remote failure)
finished. total time: 0.001s

D:\Downloads\CEL\platform-tools>fastboot flash partition gpt.bin
error: cannot open 'gpt.bin'

D:\Downloads\CEL\platform-tools>fastboot oem fb_mode_set
...
FAILED (remote failure)
finished. total time: 0.001s

D:\Downloads\CEL\platform-tools>fastboot oem fb_mode_set
...
FAILED (remote failure)
finished. total time: -0.000s

Como corrigir o erro?

— alterado em 18/12/2021, 17:46:44