samsung n920p imei repair

hi. i have a n920p note 5 with imei 0000000
this phone firmware is N920PVPS3BPJ2 . and for this version its not downgraide to any other firmware or any combinations file for write Cert file.
please guide me how write cert file for this fone on this version. thanks.

Checking CERT file… ok
KEY ID: 0092
Waiting ADB device… ok
Reading phone info…
Model: SM-N920P
Android version: 6.0.1
Product code: Not Active
Phone version: N920PVPS3BPJ2
PDA version: N920PVPS3BPJ2
CSC version: N920PSPT3BPJ2
CSC country code: USA
CSC sales code: XAS
HW version:
Phone SN: R38GA0B6C42
Modem board: MDM9635M
RF cal date: NONE
IMEI:
Initialization AT RIL… error

Done with Samsung Tool PRO v.27.1