My iphone torch doesn't work

[blu inc]

Hi,

I have a iPhone 4.

My camera flash does work..

But when I downloaded the latest update with the torch button option, it didn't light.
I also just downloaded two torch apps...they didn't work .
I did a reset( the one that keeps media data though) still no torch light working..

Anyone help please

 

[John T]

Maybe the led has failed, do you have a local Apple Store?