note 3 n900 imei null/null

I have note 3 n900 imei null/null ,writing imei not success ,,reset efs not work ,,flash with 4 file not work ,,flash modem not work ,,,write cert give this error
can You Help Me ??

Operation: Write CERT
Selected model: SM-N900
Software version: 24.3

Checking certificate file… OK
KEY ID: 0813
Waiting ADB device… OK
Reading phone info…
Model: SM-N900
Android version: 5.0
Product code:
Phone version:
PDA version: N900XXUEBNL8
CSC version: N900OXAEBNL8
CSC country code: Poland
CSC sales code: XEO
HW version:
Phone S/N:
Modem board:
RF cal date:
Checking Super user right… true
Reading nv data… OK
Checking magic… SSNV not found

Done with Samsung Tool PRO v.24.3