Apple Store in High Cross Leicester
Just been in to the above store because I've been having problems downloading the new OS for my iPod Touch (On a different thread). I didn't buy the iPod there and I've never been in to it before. However, when I told them about the problems I'd been having, they offered to install the new OS there and then. They warned me that there was a chance I'd lose the data stored on it, but as everything on it was backed up, I wasn't worried.
It took them about 5 minutes, nothing was lost from the iPod and they never tried to sell me anything while I was there. The staff were very helpful and knowledgeable about the products in the store.