d820 flash error

i am getting error when flashing this d820, please give me correct file id,
Reading information...
Using Fastboot mode...
Reading common information
(bootloader) version: 0.5
(bootloader) version-bootloader: 3.19.0.0000
(bootloader) version-baseband: 01.01.010_U10305041_08.01.50512
(bootloader) version-cpld: None
(bootloader) version-microp: None
(bootloader) version-main: 2.10.720.6
(bootloader) version-misc: PVT SHIP S-ON
(bootloader) serialno: CC4CPYC01502
(bootloader) imei: 357585060762829
(bootloader) imei2: 357585060762837
(bootloader) meid: 00000000000000
(bootloader) product: a51_dtul
(bootloader) platform: hTCBmsm8939
(bootloader) modelid: 0PFJ10000
(bootloader) cidnum: HTC__038
(bootloader) battery-status: good
(bootloader) battery-voltage: 0mV
(bootloader) partition-layout: Generic
(bootloader) security: on
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: da038a09
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
(bootloader) mfg-name: 1001
all: Done!
finished. total time: 0.078s
htc_fastboot finished
Reading CID information
... (bootloader) cid: HTC__038
OKAY
finished. total time: -0.000s
htc_fastboot finished
Reading MEID information
... (bootloader) meid: 00000000000000
OKAY
finished. total time: 0.000s
htc_fastboot finished
Reading IMEI1 information
... (bootloader) imei: 357585060762829
OKAY
finished. total time: -0.000s
htc_fastboot finished
Reading IMEI2 information
... (bootloader) imei2: 357585060762837
OKAY
finished. total time: -0.000s
htc_fastboot finished
Reading secure flag information
... (bootloader) secure_flag: 3
OKAY
finished. total time: 0.000s
htc_fastboot finished
Reading serial number information
... (bootloader) [ERR] Command error !!!
OKAY
finished. total time: -0.000s
htc_fastboot finished
Reading color information
... (bootloader) [ERR] Command error !!!
OKAY
finished. total time: 0.016s
htc_fastboot finished
Read information completed.

thanks