d820n flashing error

[ahmedmobile22]

d820 flashing error with xtclip
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: 3.17.401.3
(bootloader) version-misc: PVT SHIP S-OFF
(bootloader) serialno: CC535YC01893
(bootloader) imei: 357586060725006
(bootloader) imei2: Not Support
(bootloader) meid: 00000000000000
(bootloader) product: a51_ul
(bootloader) platform: hTCBmsm8939
(bootloader) modelid: 0PFJ40000
(bootloader) cidnum: 11111111
(bootloader) battery-status: good
(bootloader) battery-voltage: 0mV
(bootloader) partition-layout: Generic
(bootloader) security: off
(bootloader) build-mode: SHIP
(bootloader) boot-mode: FASTBOOT
(bootloader) commitno-bootloader: 1be89947
(bootloader) hbootpreupdate: 11
(bootloader) gencheckpt: 0
(bootloader) mfg-name: 1001
all: Done!
Execution time is 27(ms)
Reading secure flag information
... (bootloader) secure_flag: 0
OKAY
Execution time is 16(ms)
Reading CID information
... (bootloader) cid: 11111111
OKAY
Execution time is 19(ms)
Reading MEID information
... (bootloader) meid: 00000000000000
OKAY
Execution time is 18(ms)
Read information completed.


Starting flash process...
target rom version: 3.17.61.3
found large-zip header, file count: 8
processing file 1/8...
sending 'zip' (49306 KB)...
OKAY [ 3.151s]
writing 'zip'...
(bootloader) rom parsing start ...
(bootloader) rom parsing finish ...
FAILED (remote: not allowed)
finished. total time: 3.258s

hep me p l z
xtc2clip