Well, I had this iPhone 3GS 32 GB variant for a long time. I decided to upgrade it to 5.1.1! After which I Jailbroke using redsn0w. I hacktivated the phone. It was fine for a couple of days. But, now, at total random times, the phone switches off itself. And, The phone is stuck on the apple logo in my first to attempts to switch on and, it switches off after some time. On the third time, The phone usually switches on. But, this time, The re-boot or Switch Off is continuous and I can see my Apple Lockscreen for about 2-3 seconds on every third boot. Any help?