Mizu MX4 MT6595 dead

Mizu MX4 phone dead no flash
Boot downloading…….. here is not to go further.
How to repair flash?

LOG:

Code:

Operation:
          1. Power off the phone.
          2. Please insert USB cable within 20 seconds.

Connecting...
CPU TYPE:MT6595
Hardware version:CB00
Software version:0001
SecCfgVal :0x07000000
BromVersion :0x05
BLVersion :0xFE
Boot downloading...