I9505 new security unlock done.. with out downgrade.[Reference]
Procedure:
1:flash with For_Unlock_GT-I9505 from support
2:type "*#0808#" and select "DM+MODEM+ABD"
3:use usb cable
4:readinfo and press read codes
here's the log
Platform: Samsung Android
Selected port: COM167
Selected model: GT-I9505
Mode: Normal
Phone model: GT-I9505
Firmware compiled date: Mar 28 2013
Firmware compiled time: 09:00:00
Firmware released date: Jul 11 2013
Firmware released time: 20:54:07
Phone IMEI: 356844-05-346062-3
SW Version: M9615A-CEFWTAZM-4.0.17062
Reading phone unlock codes. It can take some time, please wait...
Reading security failed
Read codes failed
Please switch your phone to the download mode and connect it to a
PC.
To put GT-I9505 phone into download mode you have to perform the
following steps:
1. Reconnect phone battery.
2. Press and hold "Volume - " + "Home" + "Power" buttons.
3. When phone turns on press "Volume+" button.
Found phone on
Firmware write started.
Writing MDM section...
MDM section has been written successfully.
Firmware writing successfully completed.
-----------------------------------------------------------------------------------
Platform: Samsung Android
Selected port: COM1
Selected model: GT-I9505
Phone was not found on the selected port!
Searching for USB diagnostic port...
Connecting to phone on COM167
Mode: Normal
Phone model: GT-I9505
Firmware compiled date: Mar 28 2013
Firmware compiled time: 09:00:00
Firmware released date: Apr 12 2013
Firmware released time: 00:04:45
Phone IMEI: 356844-05-346062-3
SW Version: M9615A-CEFWTAZM-4.0.17062
-----------------------------------------------------------------------------------
Platform: Samsung Android
Selected port: COM167
Selected model: GT-I9505
Mode: Normal
Phone model: GT-I9505
Firmware compiled date: Mar 28 2013
Firmware compiled time: 09:00:00
Firmware released date: Apr 12 2013
Firmware released time: 00:04:45
Phone IMEI: 356844-05-346062-3
SW Version: M9615A-CEFWTAZM-4.0.17062
Reading phone unlock codes. It can take some time, please wait...
Connecting to server...
Connect successfully to server
Checking smart card...
Smart card successfully checked
Checking operation...
Operation successfully checked
NCK unlock code: *#7465625*638*25837309#
NSCK unlock code: *#7465625*782*00000000#
SPCK unlock code: *#7465625*77*00000000#
1:flash with For_Unlock_GT-I9505 from support
2:type "*#0808#" and select "DM+MODEM+ABD"
3:use usb cable
4:readinfo and press read codes
here's the log
Platform: Samsung Android
Selected port: COM167
Selected model: GT-I9505
Mode: Normal
Phone model: GT-I9505
Firmware compiled date: Mar 28 2013
Firmware compiled time: 09:00:00
Firmware released date: Jul 11 2013
Firmware released time: 20:54:07
Phone IMEI: 356844-05-346062-3
SW Version: M9615A-CEFWTAZM-4.0.17062
Reading phone unlock codes. It can take some time, please wait...
Reading security failed
Read codes failed
Please switch your phone to the download mode and connect it to a
PC.
To put GT-I9505 phone into download mode you have to perform the
following steps:
1. Reconnect phone battery.
2. Press and hold "Volume - " + "Home" + "Power" buttons.
3. When phone turns on press "Volume+" button.
Found phone on
Firmware write started.
Writing MDM section...
MDM section has been written successfully.
Firmware writing successfully completed.
-----------------------------------------------------------------------------------
Platform: Samsung Android
Selected port: COM1
Selected model: GT-I9505
Phone was not found on the selected port!
Searching for USB diagnostic port...
Connecting to phone on COM167
Mode: Normal
Phone model: GT-I9505
Firmware compiled date: Mar 28 2013
Firmware compiled time: 09:00:00
Firmware released date: Apr 12 2013
Firmware released time: 00:04:45
Phone IMEI: 356844-05-346062-3
SW Version: M9615A-CEFWTAZM-4.0.17062
-----------------------------------------------------------------------------------
Platform: Samsung Android
Selected port: COM167
Selected model: GT-I9505
Mode: Normal
Phone model: GT-I9505
Firmware compiled date: Mar 28 2013
Firmware compiled time: 09:00:00
Firmware released date: Apr 12 2013
Firmware released time: 00:04:45
Phone IMEI: 356844-05-346062-3
SW Version: M9615A-CEFWTAZM-4.0.17062
Reading phone unlock codes. It can take some time, please wait...
Connecting to server...
Connect successfully to server
Checking smart card...
Smart card successfully checked
Checking operation...
Operation successfully checked
NCK unlock code: *#7465625*638*25837309#
NSCK unlock code: *#7465625*782*00000000#
SPCK unlock code: *#7465625*77*00000000#