gt-i9515 imei null null repaire secrity

[a.w.m.wafaz]

I TRY REPAIRE SEURITY AND WIPIE SEURITY I SELECT ALL PORT SAME PROBLEM

Welcome to Octoplus/Octopus Box Samsung software version 1.8.9
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To connect GT-I9515 phone you have to perform the following steps:
1. Disconnect USB cable from phone.
2. Go to Menu->Settings->More->About Device.
3.Tap on "Build number" 7 times to enable developer options.
4. Go to Menu->Settings->More->Developer options.
5. Turn on "USB Debugging" option.
6. Go to dial window.
7. Enter "*#0808#" number.
8. Select "DM+Modem+ADB".
9. Press Home button.
10. Go to dial window.
11. Enter "*#9090#" number.
12. Set "Diag config" to "USB" value.
13. Restart phone.
14. Press "Read Info" in software.
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Platform: Samsung Android
Selected port: COM72
Selected model: GT-I9515
Detected phone model: GT-I9515
Firmware compiled date: Fri Sep 26 17:59:00 KST 2014
PDA version: I9515XXU1ANI3
CSC version: I9515YJV1ANK1
SW version: Unknown
Phone IMEI: Unknown
Android version: 4.4.2 (KOT49H)
Reading info...
Phone was not found on the selected port!
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Platform: Samsung Android
Selected port: COM39
Selected model: GT-I9515
Detected phone model: GT-I9515
Firmware compiled date: Fri Sep 26 17:59:00 KST 2014
PDA version: I9515XXU1ANI3
CSC version: I9515YJV1ANK1
SW version: Unknown
Phone IMEI: Unknown
Android version: 4.4.2 (KOT49H)
Reading info...
Phone was not found on the selected port!

[a.w.m.wafaz]

Platform: Samsung Android
Selected port: COM39
Selected model: GT-I9515
Operation was canceled
Writing Certificate failed
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Platform: Samsung Android
Selected port: COM39
Selected model: GT-I9515
Selected file: C:\Users\SHT\Downloads\cert-gt-i9515_352168062519086_rf8f7069gkw.cert
Detected phone model: GT-I9515
Firmware compiled date: Fri Sep 26 17:59:00 KST 2014
PDA version: I9515XXU1ANI3
CSC version: I9515YJV1ANK1
SW version: Unknown
Phone IMEI: Unknown
Android version: 4.4.2 (KOT49H)
Checking Root:
Phone is Rooted.
Checking Certificate file...
Certificate file successfully checked
Writing Certificate...
Phone connected successfully
Writing new phone IMEI...
Writing Certificate failed

[Octopus box]

As You can see from your Software log, phone's modem part is damaged:

SW version: Unknown

This can be Software (modem firmware is damaged or You have written unsuitable firmware) or HW problem.

It is not possible to repair IMEI (write IMEI Certificate), if phone's modem part is damaged.

Please re-flash the phone with different firmwares and after writing each firmware check, whether modem is correct (not Unknown). And only then (when phone's modem part will be correct) perform the "Write Cert" operation.