return to stock?

I know this is asked a lot n believe meive searched a lot...I need an ruu but cant find it anywhere.

the reason for this is my phone kept on rebooting, but not in recovery or bootloader so it made me think its a software issue. Ive tried a new rom but no luck,,,,it still happens. I though returning to stock would be to back it up before flashing roms. I guess im wrong? my back up has disappeared n I cant find a working ruu link anywhere n I have searched for absolutely hours!!

can anyone help please

phone in bootloader says

ENRC2B_U PVT SHIP S-ON RL
HBOOT-1.72.0000
CPLD-none
MI CROP-none
RADIO-3.1204.171.33
eMMC-bootmode: disabled
CPU-bootmode: disabled
HW secure boot: enabled
MODEM PATH: OFF
Jun 21 2013,17:36:36

orange uk if that helps

sixcarnage said:

I'm guessing you didn't manually flash the kernel via fastboot. Do this before you even consider an ruu flash.

Sent from my HTC One X+ using Tapatalk

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i did everything right buddy. the problem I had with the ruu is that I couldn't find one for my phone n if I did the link ended up being a load of rubbish. I had no choice but to claim for a new phone again anyway