htc m7 in fast boot mode not work any oppration why

me check 1 by1 all oppration but fail chimera tool

Chimera Mobile Phone Utility version: 10.58.1319 @ 2016-06-28

Printing phone history

Direct unlock
6/28/2016
7:28:01
PM

S-ON/OFF
6/28/2016
7:20:37
PM

[Direct unlock started]

Downloading recovery image from server.
Please hold on, it can take some time.
Recovery image has been downloaded.

Switching to fastboot mode
Phone detected
Fastboot exited unexpectedly.
Finished at local time: [06.28.16 23:38:41]
WorkID: 11729963