General :: Huawei Honor U8860 - Stock Launcher Start Crashing?

I got my Huawei Honor at christmas. It worked fine for the first few months.The stock launcher started crashing. It required a reboot when it crashed. It happened fee times a day.

Then, one morning, it crashed again. As usual, I rebooted and put it in my pocket. One hour later, I noticed my phone was hot. It d been stuck on a reboot for an hour. It was not the battery. The battery was cold. But the bottom part where sd and sim cards are was burning hot. When I took the battery off, the phone cooled down quickly. It had it's warranty left, so I took it back to the store and they sent it to repair. The phone was reparied in under a week, and they said they had to update the OS. It is still the same 4.0.3. Keeps crashing and launcher and all custom launchers from play store keep crashing. how to root this phone.

And is there big chance of bricking this phone?