[Xperia SP General] sendal773:
im already follow your instruction but still facing problem,

im installed 0.9.18.6 version and did the partition flash

after flashing the whole ftf the phone restart again in a minute causing failed to flash

here is the log

01/023/2015 09:23:03 - INFO - Device connected in flash mode

01/023/2015 09:23:45 - INFO - Device disconnected

01/024/2015 09:24:11 - INFO - Device connected in flash mode

01/024/2015 09:24:16 - INFO - Selected Bundle for Sony Xperia SP (C5302). FW release : 12.1.A.1.201. Customization : Generic_ID

01/024/2015 09:24:16 - INFO - Preparing files for flashing

01/024/2015 09:24:16 - INFO - Please connect your device into flashmode.

01/024/2015 09:24:17 - INFO - Opening device for R/W

01/024/2015 09:24:17 - INFO - Reading device information

01/024/2015 09:24:17 - INFO - Phone ready for flashmode operations.

01/024/2015 09:24:17 - INFO - Current device : Unknown: Jan 19 2014/22:13:32 - YT9109RV0N - Unknown: Jan 19 2014/22:13:32 - Unknown: Jan 19 2014/22:13:32 - Unknown: Jan 19 2014/22:13:32

01/024/2015 09:24:17 - INFO - Start Flashing

01/024/2015 09:24:17 - INFO - Processing loader.sin

01/024/2015 09:24:17 - INFO - Checking header

01/024/2015 09:24:17 - INFO - Flashing data

01/024/2015 09:24:17 - INFO - Processing of loader.sin finished.

01/024/2015 09:24:19 - INFO - Loader : S1_Root_7054 - Version : R5G006 / Boot version : R11B022 / Bootloader status : ROOTED

01/024/2015 09:24:19 - INFO - Processing partition-image.sin

01/024/2015 09:24:19 - INFO - Checking header

01/024/2015 09:24:19 - INFO - Flashing data

01/024/2015 09:24:19 - INFO - Processing of partition-image.sin finished.

01/024/2015 09:24:19 - INFO - No bootdelivery to send

01/024/2015 09:24:20 - INFO - Ending flash session

01/024/2015 09:24:20 - INFO - Flashing finished.

01/024/2015 09:24:20 - INFO - Please unplug and start your phone

01/024/2015 09:24:20 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings

01/024/2015 09:24:20 - INFO - Device connected in flash mode

01/024/2015 09:24:30 - INFO - Device disconnected

01/024/2015 09:24:38 - INFO - Device connected in flash mode

01/024/2015 09:24:47 - INFO - Selected Bundle for Sony Xperia SP (C5302). FW release : 12.1.A.1.201. Customization : Generic_ID

01/024/2015 09:24:47 - INFO - Preparing files for flashing

01/025/2015 09:25:17 - INFO - Please connect your device into flashmode.

01/025/2015 09:25:18 - INFO - Opening device for R/W

01/025/2015 09:25:18 - INFO - Reading device information

01/025/2015 09:25:19 - INFO - Unable to read from phone after having opened it.

01/025/2015 09:25:19 - INFO - trying to continue anyway

01/025/2015 09:25:19 - INFO - Start Flashing

01/025/2015 09:25:19 - INFO - Processing loader.sin

01/025/2015 09:25:19 - INFO - Checking header

01/025/2015 09:25:20 - ERROR - Processing of loader.sin finished with errors.

01/025/2015 09:25:20 - INFO - Ending flash session

01/025/2015 09:25:20 - ERROR - Error in processHeader : 995 : The I/O operation has been aborted because of either a thread exit or an application request.

01/025/2015 09:25:20 - ERROR - Error flashing. Aborted

01/025/2015 09:25:20 - INFO - Device disconnected

01/025/2015 09:25:33 - INFO - Device connected with USB debugging off

01/025/2015 09:25:33 - INFO - For 2011 devices line, be sure you are not in MTP mode

for now im back using cm.12.1 , and im still trying to get back to stock rom :)