Samsung GT-I9500 IMEI: Unknown Problem Solution For Android version: 4.4.2

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here log 

Welcome to Octoplus/Octopus Box Samsung software version 1.6.2
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To connect GT-I9500 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.
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Platform: Samsung Android
Selected port: COM1
Selected model: GT-I9500
Detected phone model: GT-I9500
Firmware compiled date: Fri Feb 28 21:23:39 KST 2014
PDA version: I9500UBUFNC1
CSC version: I9500UWMFNC1
SW version: I9500UBUFNA2
Phone IMEI: 356567901144475
Phone SN: RF1C966595H
Android version: 4.4.2 (KOT49H)
Reading security backup, please wait...
Backup saved as C:\Program Files\Octoplus\Octoplus_Samsung
\BACKUP\Security-GT-I9500-Unknown25-07-2014_11-34-59-.asec file
Cheking security type...
New security type is detected
Executing exploit...
Exploit has been executed successfully 
Old IMEI: 356567-90-114447-5
New IMEI: 352993-05-004457-7
Repairing IMEI ...
Repairing network. Please wait, this can take some time...
Network is successfully repaired
Phone will restart now
IMEI successfully repaired.
Please, restart the phone to apply changes
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Platform: Samsung Android
Selected port: COM1
Selected model: GT-I9500
Searching for a phone. Please wait...
Phone found.
Firmware compiled date: Fri Feb 28 21:23:39 KST 2014
PDA version: I9500UBUFNC1
CSC version: I9500UWMFNC1
SW version: Unknown
Phone IMEI: Unknown
Android version: 4.4.2 (KOT49H)