octopus samsung is failing me

HI Since i have bought this box i keep on getting failed message at the end of any operation. I tried unlocking s6 and some other too at the end says same failed, today i have tried fixing imei and it did this now using chimera to solve this…

Welcome to Octoplus/Octopus Box Samsung software version 2.1.9
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To connect GT-I9505 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. Restart phone.
11. Press "Read Info" in software.
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Platform: Samsung Android
Selected port: COM288
Selected model: GT-I9505
Mode: Normal
Phone model: GT-I9505
Firmware compiled date: Nov 01 2013
Firmware compiled time: 11:00:00
Firmware released date: Nov 27 2013
Firmware released time: 23:02:06
Incorrect IMEI
SW version: M9615A-CEFWTAZM-4.0.17125
———————————————————————————–
Platform: Samsung Android
Selected port: COM288
Selected model: GT-I9505
Mode: Normal
Phone model: GT-I9505
Firmware compiled date: Nov 01 2013
Firmware compiled time: 11:00:00
Firmware released date: Nov 27 2013
Firmware released time: 23:02:06
SW version: M9615A-CEFWTAZM-4.0.17125
Old IMEI: 004400-15-202000-0
New IMEI: 358643-05-889764-1
Creating NVM backup
Reading NVM done!
Firmware compiled date: Wed Nov 27 22:11:03 KST 2013
PDA version: I9505XXUEMKF
CSC version: I9505BTUEMK5
SW version: I9505XXUEMKF
Phone IMEI: Unknown
Phone SN: RF1DA0GZL4K
Android version: 4.3 (JSS15J)
Cheking Root
Reading security backup, please wait…
Backup saved as C:\Program Files\Octoplus\Octoplus_Samsung\BACKUP\Security-GT-I9505-29-01-2016_
16-55-49-.asec file
Erasing old IMEI. It can take some time. Please wait…
Phone will restart now. Please don’t disconnect cable!
Firmware compiled date: Nov 01 2013
Firmware compiled time: 11:00:00
Firmware released date: Nov 27 2013
Firmware released time: 23:02:06
SW version: M9615A-CEFWTAZM-4.0.17125
Found phone on COM288
Repairing NVM for GT-I9505 phone…
Write IMEI failed