Failed to Update Sony Xperian S LT26

[SonyUpdate]

Went upgrade sony xperia lt26 s, at the end failed.
I try to recover it by Sony PC Companion 2.1 and update again.
An exclamation mark appears when I turn on, but does not vibrate.
The usb cable is not recognized when I connect the USB to the PC with the Sony Xperia S.
Help me out guys.

[Uliwooly]

Use SUS instead of PCC

Update Service (SUS)

http://www.sonymobile.com/gb/tools/update-service/

http://www-support-downloads.sonymobile.com/Software%20Downloads/Update_Service_Setup-2.11.12.5.exe

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355

Don't forget the Kudos