what is soution to this htc m9 plus

Starting flash process...
target rom version: 2.18.651.2
found large-zip header, file count: 22
processing file 1/22...
sending 'zip' (98806 KB)...
OKAY [ 6.379s]
writing 'zip'...
(bootloader) HOSD CL#670935
(bootloader) ERR check AES encrypted magic string failed.
(bootloader) end@Done
FAILED (remote: 12: fail to flash via downloadzip)
finished. total time: 7.428s
Flash process completed.
Flash not successfull, reboot will not be done