I want to apologize for my English and for any mistake, considering that this is my 1st post here on xda!
In the past I've flashed some official roms, using flashtool, I've unlocked bootloader and rooted my phone several times, but this is all the experience I'd had before I ruined my phone.
What I tried was to install this: http://forum.xda-developers.com/show....php?t=2175768
I had already cwm on my phone so I did copy ACID zip file on my hone sd card and then I entered cwm and flashed that zip. It was all ok, then the phone restarted and after displaying "sony" and "xperia", it displayed those curb lines moving (I hope you get it), then restarted and doing the same steps over and over.
What I tried was to enter cwm again and wipe cache/data, wipe cache by dalvik and wipe partitions...of course with no result at all.
I tried to repair the phone using PC Companion and SUS but both say I can't because my phone hasn't original android.
Then I thought about installing CM 11, but it wasn't possible because the phone doesn't start so I could copy boot.img into sd card.
My last idea is to flash official 4.3 from sony with flashtool.
My question is: does anybody know what I could do if flashing official 4.3 fails too?
Also, if someone could help me what to do step by step to install cm11 I'll be very grateful. I've downloaded cm11.zip but all tutorials say that I have to copy boot.img on sd card which I can't. Is there any other method?