[XPERIA X10 Q&A, Help & Troubleshooting] mikepicart:
Ow sorry... Fast Boot? Could you explain further. i tried FLASHMODE. this is my original post but i placed it here so that i can be helped by much more people.

http://xdaforums.com/showthread.php?p=36278680#post36278680

basically, my phone does not go on. My phone can be placed in FLASH MODE but the flashtool doesnt like to flash it. i tried unchecking everything but checking the do not final check bla bla. and waited for 4 hours and this showed. take note that i tried it TWICE.

05/028/2013 02:28:24 - INFO - <- This level is successfully initialized

05/028/2013 02:28:24 - INFO - Flashtool Version 0.9.9.0 built on 2012-11-13 22:53:30

05/028/2013 02:28:24 - INFO - You can drag and drop ftf files here to start flashing them

05/028/2013 02:28:29 - INFO - Device disconnected

05/028/2013 02:28:36 - INFO - Selected X10a_3.0.1.G.0.75_AMERICA-US GENERIC 1233-8200.ftf

05/028/2013 02:28:36 - INFO - Preparing files for flashing

05/028/2013 02:28:37 - INFO - Please connect your device into flashmode.

05/028/2013 02:28:41 - INFO - Device connected in flash mode

05/028/2013 02:28:41 - INFO - Opening device for R/W

05/028/2013 02:28:41 - INFO - Reading device information

05/028/2013 02:28:41 - INFO - Phone ready for flashmode operations.

05/028/2013 02:28:41 - INFO - Start Flashing

05/028/2013 02:28:41 - INFO - Processing loader

05/028/2013 02:28:41 - INFO - Checking header

05/028/2013 02:28:41 - INFO - Flashing data

05/028/2013 02:28:43 - INFO - Loader : S1_Loader_Root_f851 - Version : R4A024 / Bootloader status : UNROOTABLE

05/028/2013 02:28:43 - INFO - Disabling final data verification check

05/028/2013 02:28:43 - INFO - Processing kernel.sin

05/028/2013 02:28:43 - INFO - Checking header

05/028/2013 02:28:43 - INFO - Flashing data

05/028/2013 02:28:44 - INFO - Ending flash session

05/028/2013 02:28:44 - ERROR -

05/028/2013 02:28:44 - ERROR - Error flashing. Aborted

05/028/2013 02:28:44 - INFO - Device connected in flash mode

05/028/2013 02:28:46 - INFO - Device disconnected

05/028/2013 02:28:47 - INFO - Device connected in flash mode

05/028/2013 02:28:48 - INFO - Device disconnected

05/028/2013 02:28:57 - INFO - Selected X10a_3.0.1.G.0.75_AMERICA-US GENERIC 1233-8200.ftf

05/028/2013 02:28:57 - INFO - Preparing files for flashing

05/028/2013 02:28:58 - INFO - Please connect your device into flashmode.

05/029/2013 02:29:01 - INFO - Device connected in flash mode

05/029/2013 02:29:01 - INFO - Opening device for R/W

05/029/2013 02:29:01 - INFO - Reading device information

05/029/2013 02:29:01 - INFO - Phone ready for flashmode operations.

05/029/2013 02:29:01 - INFO - Start Flashing

05/029/2013 02:29:01 - INFO - Processing loader

05/029/2013 02:29:01 - INFO - Checking header

05/029/2013 02:29:01 - INFO - Flashing data

05/029/2013 02:29:03 - INFO - Loader : S1_Loader_Root_f851 - Version : R4A024 / Bootloader status : UNROOTABLE

05/029/2013 02:29:03 - INFO - Disabling final data verification check

05/029/2013 02:29:03 - INFO - Processing kernel.sin

05/029/2013 02:29:03 - INFO - Checking header

05/029/2013 02:29:03 - INFO - Flashing data

05/029/2013 02:29:04 - INFO - Processing fota1.sin

05/029/2013 02:29:04 - INFO - Checking header

05/029/2013 02:29:04 - INFO - Flashing data