[Q] X10 Soft brick help needed - XPERIA X10 Q&A, Help & Troubleshooting

Hello Everyone,
I was running cm10-v9.3 with the X10_4.1.X_cmx10_BootManager_v20 kernel, Then I wanted to upgrade it to XPERIA X10Z-4.1.2_10.1.A.1.350 ROM which has been recently released together with the X10_4.1.X_cmx10_BootManager_v21 kernel, but I forgot to turn usb debugging off.
I cannot use SEUS to restore my phone, I forgot to make a backup (yes plain stupid) . And I can't even go into recovery or flash any other Kernel, I only managed to accidentally of course... flash the stock kernel which was in Flashtool, I can't even update it to another kernel, I tried v18, v19, v20, v21 and all gave the same error:
26/052/2013 01:52:26 - INFO - <- This level is successfully initialized
26/052/2013 01:52:26 - INFO - Flashtool Version 0.9.10.1 built on 2013-01-09 19:49:47
26/052/2013 01:52:26 - INFO - You can drag and drop ftf files here to start flashing them
26/052/2013 01:52:31 - INFO - Device disconnected
26/052/2013 01:52:50 - INFO - Selected X10_4.1.X_cmx10_BootManager_v18.ftf
26/052/2013 01:52:50 - INFO - Preparing files for flashing
26/052/2013 01:52:50 - INFO - Please connect your device into flashmode.
26/053/2013 01:53:02 - INFO - Device connected in flash mode
26/053/2013 01:53:02 - INFO - Opening device for R/W
26/053/2013 01:53:02 - INFO - Reading device information
26/053/2013 01:53:02 - INFO - Phone ready for flashmode operations.
26/053/2013 01:53:02 - INFO - Current device : X10i - CB511J6WRH - 1257-5102_R4E - 1227-4612_3.0.1.G.0.75 - WORLD_6.0.B.0.743
26/053/2013 01:53:02 - INFO - Start Flashing
26/053/2013 01:53:02 - INFO - Processing loader
26/053/2013 01:53:02 - INFO - Checking header
26/053/2013 01:53:02 - INFO - Ending flash session
26/053/2013 01:53:02 - ERROR - ERR_SEVERITY="MAJOR";ERR_CLASS="SECURITY_CLASS";ERR_DYNAMIC="SIN header verification failed"
Help would be appreciated. Thank you.

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help
you have to flash previous kernal and then goto recover.
then full wipe and goto mount and format system.then install your rom

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uchithisanka said:
you have to flash previous kernal and then goto recover.
then full wipe and goto mount and format system.then install your rom
Click to expand...
Click to collapse
That's the problem, it won't even let me flash my last kernel

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piotrtekien said:
That's the problem, it won't even let me flash my last kernel
Click to expand...
Click to collapse
Thick at no final verification before flash.
Sent from my X10 using xda app-developers app

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epulrevo said:
Thick at no final verification before flash.
Sent from my X10 using xda app-developers app
Click to expand...
Click to collapse
What do you mean?
edit:nevermind found it
and still same error:
26/039/2013 09:39:00 - INFO - Current device : X10i - CB511J6WRH - 1257-5102_R4E - 1227-4612_3.0.1.G.0.75 - WORLD_6.0.B.0.743
26/039/2013 09:39:00 - INFO - Start Flashing
26/039/2013 09:39:00 - INFO - Processing loader
26/039/2013 09:39:00 - INFO - Checking header
26/039/2013 09:39:00 - INFO - Ending flash session
26/039/2013 09:39:00 - ERROR - ERR_SEVERITY="MAJOR";ERR_CLASS="SECURITY_CLASS";ERR_DYNAMIC="SIN header verification failed"

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help
drag tft kernal file on to flash tool.then it showing details of kernal.then tick final verification box in right end of the flastool

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uchithisanka said:
drag tft kernal file on to flash tool.then it showing details of kernal.then tick final verification box in right end of the flastool
Click to expand...
Click to collapse
I already found it, and in my last post I said it still gives me the same error after choosing my tft from my last rom from the list after ticking no final vertification at MISC.

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help
if you already have this problem one solution have
try to flash x10 aro 2.3.ftf
for X10 aro 2.3.ftf fry to google it and flash

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IT WORKS WOOO Thanks Bro!

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uchithisanka said:
if you already have this problem one solution have
try to flash x10 aro 2.3.ftf
for X10 aro 2.3.ftf fry to google it and flash
Click to expand...
Click to collapse
I'm running XPERIA X10Z-4.1.2_10.1.A.1.350
with X10_4.1.X_cmx10_BootManager_v21 kernel
Thanks DD

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{{delete|Delete reason|~~~~~}}

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piotrtekien said:
IT WORKS WOOO Thanks Bro!
Click to expand...
Click to collapse
Dont forget to hit thanks
Sent from my Desire HD using xda app-developers app

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Thanks Very Much
uchithisanka said:
if you already have this problem one solution have
try to flash x10 aro 2.3.ftf
for X10 aro 2.3.ftf fry to google it and flash
Click to expand...
Click to collapse
Even i got Stuck with same problem. Ur thread help to resolve issue ,,Big big thanks:good::good::good::good: