[SOLVED]Xperia x upgrade fall

hi, this morning i have notice of upgrade os, i have try it, but the mobile, after first reboot is stopped with the progress bar near the end for several tens of minutes

what should I do?


ok after around 1 /h i have forced the reboot , pressing off +volume up , is restarting correctly .

but keep not go-off form standard way, i must press off +volume up and waiting three vibrations