htc 626 flashing failed

htc 626 flashing failed help please give working flashtool
Wait for phone...
Phone found! [ 119 ]
Sync...
Inital Boot Ok!
BB_CPU_PID : 6735
BB_CPU_NME : [MediaTek] MT6735_S00
BB_CPU_EXT : 0xCA00 , 0x8A00 , 0x0000
Processing BROM stage
Settings for BROM configured!
SecCfgVal : 0x00000000
BromVer : 0x0005
BLVersion : 0x00FE
PreLoader : NOT Active [ Erased ]
BootLdrSS : NORMAL with PRELOADER
Processing DA stage
DA Select done, will use MTK_AllInOne_DA_v5.1624.16.07
Sending and initialize DA ...
Running DA ver.4.2 on BBID : 0x93
NAND Flash : NOT INSTALLED
eMMC Flash : 484A019065324741D75107054B29A74C
Initialize Memory ...
DRAM configured from IDB!
DRAM initialize passed!
DRAM size : 0x40000000

[DA_ERROR] : DA Load failed!
ErroCode : 0x2008
DA_LOAD_FAILED
Boot Error!

Operation Failed
Elapsed: 00:00:14
Reconnect Power/Cable!