My friend also has same and there is no repair for this, only change is required and my friend got it done in warranty from AA for free.
So make sure if you have warranty its time to use it nicely, without that i think it costs 5000 dhs.
One of the main reason for these tiny blisters are direct sunlight and my answer to Infiniti is where in Dubai we have indirect sunlight, pretty lame these guys have become now on the sake of cost cutting.