Htc desire 10 pro imei repair failed

hello
i have htc desire 10pro and i want to change the imei
but everytime error


Done. You should see factory reset option in menu now
Operation finished
1. Checking phone connectivity.......
Phone connection confirmed!
HTC KEY CARD VERSION: 7
2. Checking Server connectivity...
Server connection confirmed!
3. Checking PowerAdapter connectivity...
Process started
PowerAdapter connected, processing request to adapter...
Starting operation...
Sending oem reboot-download
... OKAY
finished. total time: 0.008s
htc_fastboot finished
Waiting for the phone to reboot...
Phone DISconnected
Building connection
Initiating communication
Building connection
Data exchange sequence.
Phone connected [LC7891001220] *** Fastboot mode
Phone connected
Request sent, waiting for reply ... 2 second(s)
Processing...
Data exchange completed
Data exchange sequence.....
Initiating communication
Building connection
Data exchange sequence.
Request sent, waiting for reply ... 1 second
Processing...
Data exchange completed
Data exchange sequence....
Sending oem readimei
...
Initiating communication
Building connection
Data exchange sequence.
Request sent, waiting for reply ... 1 second
Processing...
Data exchange completed
Data exchange sequence.....(bootloader) imei: 3534910XXXXXXXX
OKAY
finished. total time: 6.092s
htc_fastboot finished
Operation completed!
Releasing adapter.
Request completed


and imei repair log

1. Checking phone connectivity.......
Phone connection confirmed!
HTC KEY CARD VERSION: 7
2. Checking Server connectivity...
Server connection confirmed!
3. Checking PowerAdapter connectivity...
Process started
PowerAdapter connected, processing request to adapter...
Starting operation...
Sending oem reboot-download
... OKAY
finished. total time: 0.007s
htc_fastboot finished
Waiting for the phone to reboot...
Phone DISconnected
Building connection
Initiating communication
Building connection
Data exchange sequence.
Phone connected [LC7891001220] *** Fastboot mode
Requesting information from server
Request sent, waiting for reply ... 3 second(s)
Processing...
Data exchange completed
Data exchange sequence.....
Initiating communication
Building connection
Data exchange sequence.
Request sent, waiting for reply ... 1 second
Processing...
Data exchange completed
Data exchange sequence....
Sending oem writeimei 353993xxxxxxxxxx
...
Initiating communication
Building connection
Data exchange sequence.
Request sent, waiting for reply ... 1 second
Processing...
Data exchange completed
Data exchange sequence.....FAILWRITE IMEI ERROR
FAILED (remote: WRITE IMEI ERROR)
finished. total time: 6.548s
htc_fastboot finished
Operation completed!
Releasing adapter.
Request completed


please help xtc tem
thankssssss