n7505 only circle

see the log and suggest solution

circle sign in signal

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Selected model: SM-N7505

Selected port:

Selected port speed: 115200

Checking certificate file... OK

Waiting ADB device... OK

Reading phone info...

Model: SM-N7505

Android version: 4.4.2

Product code: Not Active

Phone version: N7505XXUCNG2

PDA version: N7505XXUCNH1

CSC version: N7505OJVCNH2

IMEI: 004999010640000

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 v0

Writing nv data... OK

Rebooting phone... OK

Write CERT done

Done with Samsung Tool v.18.8

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now imei 352832xxxxx

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