I followed this guide "How to Install CyanogenMod on the Sony Xperia T ("mint")"on the cyano wiki and i installed the last nightly for my phone.
In the ClockworkMod Recovery i saved a backup before installing cyanogen. Then i started the phone and i had no IMEI so my phone couldn t get the TIM service and i couldn t do or receive any call. So i came back to the clockworkmod recovery, did a wipe and than selected the "restore" option. After this, it asked me if i wanted to root and i sayed yes. Now my phone is a paperweight... I can not even put the phone into fastboot mode. I don' t know what to do!!