Hola, cuando trato de instalar TWRP arroja que fallo, estoy usando la B378.
Código:
fastboot flash recovery twrp.img
target reported max download size of 471859200 bytes
sending 'recovery' (29378 KB)...
OKAY [ 0.638s]
writing 'recovery'...
FAILED (remote: Command not allowed)
finished. total time: 0.669s
Gracias