If someone is "killed" the phone and can not access or fastboot flash or what to do is the following:
1- You need tape to hold the volume + all the time.
2-Connect it to the PC.
3-in a period of between 30 and 50 minutes fastboot mode enter without notice. The light will turn blue. (All this while the tape holding down the volume + IMPORTANT!)
4-You can make the relevant procedures. In my case repeat the procedure to close bootloader with specific files for Xperia P.
I had to modify the script by adding the appropriate relock.ftf elHechicero for xperia P and kernel also specific for P. After performing "close bootloader" I have selected the specific files to my phone. Then I flashed one prerooteada and ready rom. It works perfectly and has not removed anything.
Thanks to all for their assistance. I just could not have done anything.
A fellow greeting !!!