Failure at unlocking SE X8 [Solved]

[lyes_albert]

Hi, trying to sim-unlock E15i, and i recurrently getting an error, as shown in the pic below. Your assistive suggestions are highly appreciated. Thanks

[Octopus box]

Hi.

This error:

Checking security...Failed!

means, that security in your device is damaged or it is unsupported for unlocking. If SIM card is inserted, remove it and try to repeat the operation again. Also You can try to do Factory/Hard reset and repeat the operation. If this will not help, unfortunately, we don't have another solution for this device.

[lyes_albert]

Originally Posted by Octopus box

Hi.

This error:

means, that security in your device is damaged or it is unsupported for unlocking. If SIM card is inserted, remove it and try to repeat the operation again. Also You can try to do Factory/Hard reset and repeat the operation. If this will not help, unfortunately, we don't have another solution for this device.

Security sounds alright, Imei looks normal, the phone stills asks for Sim unlocking codes. Ill try the above-mentioned suggestions and post results. Thanks

[lyes_albert]

Phone successfully unlocked after hard reset/repair TA. My deep and hearty gratitudes.
Repair TA log/

18/07/2018 13:58:11 > Platform: SE Qualcomm
18/07/2018 13:58:11 > Selected model: E15i
18/07/2018 13:58:11 > Please, reconnect battery, hold "back" key and connect USB cable...18/07/2018 13:58:29 > OK
18/07/2018 13:58:29 > Reading info...
18/07/2018 13:58:29 > Chipset: S1 MSM7227
18/07/2018 13:58:29 > IMEI: 012448-00-781064-8
18/07/2018 13:58:29 > MSN: CB511QBEL8
18/07/2018 13:58:29 > Sending loader...18/07/2018 13:58:30 > OK
18/07/2018 13:58:30 > Reading TA...
18/07/2018 13:58:30 > Reading TA_MISC...18/07/2018 13:58:31 > OK
18/07/2018 13:58:31 > Reading TA...18/07/2018 13:58:31 > OK18/07/2018 13:58:31 > OK
18/07/2018 13:58:31 > Backup saved to "Sony Ericsson_E15i_01244800781064_18-07-2018_13-58-30.TA"
18/07/2018 13:58:32 > Writing TA_MISC...18/07/2018 13:58:32 > OK
18/07/2018 13:58:32 > Writing TA...18/07/2018 13:58:32 > OK
18/07/2018 13:58:32 > Shutting down...18/07/2018 13:58:32 > OK
18/07/2018 14:04:55 > --------------------------------------------------------------------------------------------------

Unlock Operation/

Welcome to Octoplus Suite version 1.5.4
-------------------------------------------------------------------------------------------
Platform: SE Qualcomm
Selected model: E15i
Connecting to server...OK
Octopus smart card is present.
Checking smart card...OK
Smart card activations: LG, Samsung, SE Unlimited, Medusa
Username: Default_user
Authorizing...OK
Checking balance...
Checking operation...OK
Your balance: 0 credits.
To unlock E15i you need to have 0 credits.
Initializing Android Debug Bridge...OK
Disconnect USB cable and power on the phone. Select menu
"Settings"->"Applications"->"Development"->"Enable USB debugging" and
connect USB cable...OK
Device serial number: 42583930324254344157
Device status: ACTIVE
Reading info...
Detected model name: E15i
Firmware version: 2.1.1.A.0.6
Kernel version: 2.6.29
Kernel version is supported
Checking root access...
Device is not rooted.
Sending exploit...OK
Executing exploit...OK
Reconnecting device. Please wait...OK
Checking root access...OK
Root access garanted!
Initializing flash...OK
Checking security...OK
Reading Partition table...
Could not read SBL. Maybe, NAND MPU is enabled.
Disabling NAND MPU...OK
Reconnecting device. Please wait...OK
Initializing Android Debug Bridge...OK
Disconnect USB cable and power on the phone. Select menu
"Settings"->"Applications"->"Development"->"Enable USB debugging" and
connect USB cable...OK
Device serial number: 42583930324254344157
Device status: ACTIVE
Reading info...
Detected model name: E15i
Firmware version: 2.1.1.A.0.6
Kernel version: 2.6.29
Kernel version is supported
Checking root access...
Device is not rooted.
Sending exploit...OK
Executing exploit...OK
Reconnecting device. Please wait...OK
Checking root access...OK
Root access garanted!
Initializing flash...OK
Reading Partition table...OK
Reading SBL...OK
SBL type: Original, version: R8A029
Reading TA...OK
Backup saved to "C:\Program Files (x86)\Octoplus\Octoplus_Suite\BACKUP
\Sony Ericsson_E15i_18-07-2018_14-56-13.BKP"
Checking TA...OK
IMEI: 012448-00-781064-8
Replacing SBL...OK
Calculating security on the server...
Sending TA to server...OK
Calculating. Please, wait...OK
Receiving TA...OK
Writing security area...OK
Finalizing...OK
Checking bootloaders...
Check succesfully completed!
Checking TA...
Check succesfully completed!
Rebooting device...OK
Phone successfully unlocked!