Hi ! I accidentaly updated my iPhone to frimware 3.1.3. After hours of trying, i've managed to downgrade it to 3.1.2. Then I updated (and at the same time jailbroke) it to a custum 3.1.3 frimeware made thanks to snowbreez v1.5.1. Everything went fine until I tryed to unlock it by downloading ultrasnow via cydia : the download and instalation process' went all the way to the end but my device totally froze during the restart. So I dicided to hard reboot it (by holding home and sleep buttons for 10sec.). It turned off. But since then, when I try to turn it back on, all I get is a snowflake on a black background : it DOSEN'T go any furhter !! Moreover, it is not detected by any PC (I guess, beacause it is not completely turned on). To put it in a nut shell, all I can do is : 1) turn it off (by holding home and sleep buttons for 10sec.) 2) (try to) turn it on. 3) watch the nice snowflake. 4) wait for the battery to go down or turn it off myself. I really don't know what to do (exept sending it to Apple who will surely make me pay an expenseive bill, since my phone is jailbroken) to make it work aggain, and that's why I need HELP !!