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Help Galaxy S2 Boot Problems...

Hi guys new here to these forums... I'm having boot-up problems with my phone. I need this fixed ASAP.

This happened when I was on the Youtube app and everything on my phone started becoming unresponsive so I removed the battery then put it back on. At this point, It was stuck at the 'Samsung Galaxy S2 GT-I9100' boot screen. It would turn black then back to the same screen. I read a few things on the internet to fix this and one of them was to wipe the catche (I didn't wipe the dalvik catche though), which I did. But still nothing.

After this the boot screen would just come up, but this time it didn't turn black and come back. I try to go back to recovery mode but the android logo with the blue shape just pops up with no recovery mode menu then it goes back to the boot-up screen. From what I've been told and thorough my best understanding, I have several options:

1. Do a factory reset (I prefer if I not have to do this, but if I have to, I will)
2. With recovery mode, reboot the phone
3. Using download mode, download the latest stock Android OS for the S2
4. Go to my mobile carrier's shop to get this fixed

I know this kind of issue has been posted in this forum several times but this is the first time i've ever had a major problem with my phone and i just need someone to help me. All this 'reflashing the firmware' and other stuff is starting to confuse and annoy me.


Someone help me out here please, WTF am I meant to do, espicially with the fact I can't access recovery mode at this moment.
 
get into download mode again + download the original tar files from google search it of course the right model then it will be fix dont worry u just need to reflash
 
*UPDATE* I'm reflashing my firmware right now. I'm using Odin v3.09 and I tried to flash this firmware: Firmwares | SamMobile | Page 3

I believe this is the correct firmware as I got this phone in the UK and my mobile carrier is Vodafone

When I press start, the white box on top left-hand corner says 'CATCHE' and stays there. The green bar at the bottom also freezes in place. Eventually after a few minutes it says FAIL. I followed the instructions on the SAMMOBILE site exactly. What should I do now?
 
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