n900 not registered on network- IMEI null/null

[Riteshgpt60]

Hi, I have one note 3 n900 not registered on network. IMEI and baseband is fine

I reset efs and write cert.
after writing cert IMEI is null/null.

I tried writing efs back which z3x created while resetting efs but it can't write.

Need help.


Writing cert after reset efs

Selected model: SM-N900
Selected port: COM243 USB Serial Port
Selected port speed: 115200
Checking certificate file... OK
Waiting ADB device... OK
Reading phone info...
Model: SM-N900
Android version: 4.4.2
Product code: Unknown
Phone version: Unknown
PDA version: N900XXUENI1
CSC version: N900ODDENF1
IMEI: Unknown
Phone S/N: Unknown
Checking Super user right... true
Reading nv data... OK
Checking magic... OK
Running zTool, please wait... OK
Detected new type of security v1
Writing nv data... OK
Rebooting phone... OK
Write CERT done
Done with Samsung Tool v.18.6

Trying to restore the efs

Selected model: SM-N900
Selected port: COM248 USB Serial Port
Selected port speed: 115200
Waiting ADB device... OK
Reading phone info...
Model: SM-N900
Android version: 4.4.2
Product code: Unknown
Phone version: Unknown
PDA version: N900XXUENI1
CSC version: N900ODDENF1
IMEI: Unknown
Phone S/N: Unknown
Checking Super user right... true
Extracting EFS file... error
Done with Samsung Tool v.18.6

Selected model: SM-N900
Selected port: COM248 USB Serial Port
Selected port speed: 115200
Checking certificate file... error
Incorrect size of Public key signature
Done with Samsung Tool v.18.6

Need help , My IMEI is null/null and baseband is unknown.