Orange Reyo flash error

Detected : MediaTek PreLoader USB VCOM (Android) (COM6)
Phone detected…Please wait
Sending DA agent, please wait…
BaseBand CPU :MT6572_S00
BaseBand CPU Secure Version : FF
BaseBand CPU Bootloader Version : 01
—————————————————-
INT RAM: 128 KB SDRAM
EXT RAM: 1 GB DRAM
—————————————————-
EMMC: (28Gb+8192Mb) HYNIX 0x483447316404
EMMC FW VERSION: 86:00:00:00:00:00:00:00
EMMC CID: 90014A48344731 : 000000000000000000
EMMC UA SIZE: 0xe7000000
BOOT STYLE: EMMC BOOT
FULL LENGTH: 0xe7600000 [3.615 GB]
Status: USB_FULL_SPEED
Warning, flashing preloader disabled!
If you change android version, preloader must be flashed.
Flash EMMC Algo Start.
Preloader backup already exist, skip saving.
Starting flash.
Error: ??
All done.

firmware downloaded from support..please help.