[Honor 6X Questions & Answers] Mi3LiX9:
PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash boot BOOT.img
target reported max download size of 471859200 bytes
sending 'boot' (15906 KB)...
OKAY [ 0.550s]
writing 'boot'...
OKAY [ 0.380s]
finished. total time: 0.934s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash cache CACHE.img
target reported max download size of 471859200 bytes
sending 'cache' (6248 KB)...
OKAY [ 0.220s]
writing 'cache'...
OKAY [ 0.113s]
finished. total time: 0.341s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash crc CRC.img
target reported max download size of 471859200 bytes
sending 'crc' (210 KB)...
OKAY [ 0.011s]
writing 'crc'...
FAILED (remote: Command not allowed)
finished. total time: 0.025s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash curver CURVER.img
target reported max download size of 471859200 bytes
sending 'curver' (0 KB)...
OKAY [ 0.003s]
writing 'curver'...
FAILED (remote: Command not allowed)
finished. total time: 0.016s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash cust CUST.img
target reported max download size of 471859200 bytes
sending 'cust' (441406 KB)...
OKAY [ 15.354s]
writing 'cust'...
FAILED (remote: partition error)
finished. total time: 15.435s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash dts DTS.img
target reported max download size of 471859200 bytes
sending 'dts' (26330 KB)...
OKAY [ 0.946s]
writing 'dts'...
FAILED (remote: Command not allowed)
finished. total time: 0.968s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash efi EFI.img
target reported max download size of 471859200 bytes
sending 'efi' (17 KB)...
OKAY [ 0.004s]
writing 'efi'...
FAILED (remote: Command not allowed)
finished. total time: 0.020s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash fastboot FASTBOOT.img
target reported max download size of 471859200 bytes
sending 'fastboot' (2708 KB)...
OKAY [ 0.096s]
writing 'fastboot'...
FAILED (remote: Command not allowed)
finished. total time: 0.113s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash fw_hifi FW_HIFI.img
target reported max download size of 471859200 bytes
sending 'fw_hifi' (2790 KB)...
OKAY [ 0.103s]
writing 'fw_hifi'...
FAILED (remote: Command not allowed)
finished. total time: 0.120s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash fw_lpm3 FW_LPM3.img
target reported max download size of 471859200 bytes
sending 'fw_lpm3' (164 KB)...
OKAY [ 0.015s]
writing 'fw_lpm3'...
FAILED (remote: Command not allowed)
finished. total time: 0.030s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash modem_fw MODEM_FW.img
target reported max download size of 471859200 bytes
sending 'modem_fw' (98304 KB)...
OKAY [ 3.512s]
writing 'modem_fw'...
FAILED (remote: Command not allowed)
finished. total time: 3.528s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash modemnvm_update modemnvm_update.img
target reported max download size of 471859200 bytes
sending 'modemnvm_update' (24447 KB)...
OKAY [ 0.844s]
writing 'modemnvm_update'...
FAILED (remote: Command not allowed)
finished. total time: 0.912s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash recovery recovery.img
target reported max download size of 471859200 bytes
sending 'recovery' (35404 KB)...
OKAY [ 1.235s]
writing 'recovery'...
OKAY [ 0.832s]
finished. total time: 2.075s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash recovery2 reovery2.img
error: cannot load 'reovery2.img'
PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash recovery2 recovery2.img
target reported max download size of 471859200 bytes
sending 'recovery2' (35404 KB)...
OKAY [ 1.219s]
writing 'recovery2'...
OKAY [ 0.840s]
finished. total time: 2.061s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash sensorhub sensorhub.img
target reported max download size of 471859200 bytes
sending 'sensorhub' (455 KB)...
OKAY [ 0.021s]
writing 'sensorhub'...
FAILED (remote: Command not allowed)
finished. total time: 0.040s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash SHA256RSA SHA256RSA.img
target reported max download size of 471859200 bytes
sending 'SHA256RSA' (0 KB)...
OKAY [ 0.007s]
writing 'SHA256RSA'...
FAILED (remote: Command not allowed)
finished. total time: 0.027s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash system system.img
target reported max download size of 471859200 bytes
sending sparse 'system' (432073 KB)...
OKAY [ 35.278s]
writing 'system'...
FAILED (remote: sparse flash write failure)
finished. total time: 35.398s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash TEEOS TEEOS.img
target reported max download size of 471859200 bytes
sending 'TEEOS' (2464 KB)...
OKAY [ 0.087s]
writing 'TEEOS'...
FAILED (remote: Command not allowed)
finished. total time: 0.101s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash TRUSTFIRMWARE TRUSTFIRMWARE.img
target reported max download size of 471859200 bytes
sending 'TRUSTFIRMWARE' (94 KB)...
OKAY [ 0.010s]
writing 'TRUSTFIRMWARE'...
FAILED (remote: Command not allowed)
finished. total time: 0.025s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash VERLIST VERLIST.img
target reported max download size of 471859200 bytes
sending 'VERLIST' (3 KB)...
OKAY [ 0.008s]
writing 'VERLIST'...
FAILED (remote: Command not allowed)
finished. total time: 0.026s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot flash XLOADER XLOADER.img
target reported max download size of 471859200 bytes
sending 'XLOADER' (69 KB)...
OKAY [ 0.007s]
writing 'XLOADER'...
FAILED (remote: Command not allowed)
finished. total time: 0.034s

PS C:\Users\Mi3li\Desktop\مجلد جديد\test> fastboot reboot
rebooting...

finished. total time: 0.023s

There is any problem?

Nothing changed in the device

it's say "Your device is booting now..."

and restart itself once

and stayed say "Your device is booting now..."