Android Jellybean not booting My phone suddenly stopped booting. When I press power button to turn on my phone, I see manufacturer animation in a loop and phone doesn't start.

I didn't do any thing like flashing custom ROM. I don't know what happened to my phone. What should I do now? Is there any hope to fix this?

Phone model : HUAWEI ASCEND G610 U20

Android :     Version 4.2

Internal Memory: 4GB (1.5 GB Usable)

RAM: 1 GB
Download the stock firmware. The website seems pretty slow and the download is 1.41 GB so this might take some time, but it is the official website. It also includes the official flashing tool, so you may not need to download below mentioned flashing tool.
Download this flashing tool.
Extract the flashing tool to your desktop or wherever you want it. You can use the SD card if you like. In that case, all you need is to put the UPDATE.APP file in dload folder in sdcard, insert sd card to phone, Press Volume Up + Volume Down + Power Button. When Phone vibrates, release power button only, and when upgrade starts release volume keys too. Wait for some time.
Follow Steps 6-12 on this website and you should be good to go:
It has pictures :)


here

Be patient this process might take a little while. the first boot will also take some time so don't turn off your phone or disconnect it from the computer before it is done.

If you have any questions feel free to comment and I'll try to help as much as possible as I don't have this phone.