Xperia Arc forgot lock pattern with USB debuging is off topic

Hello,

Unluckily I forgot my Arc locking pattern with USB debugging off. So I can't do FlashTool with Flashmode.

I tried method here:

http://forum.xda-developers.com/show....php?t=2303380

but it does not have 'Customization Settings'.





Is there anyway that I can flash a system image via FlashTool Fastboot mode or any other better way around?

Looking forward to your advices.