Yup, only solution ...It's obviously a software/innards glitch.
However, make sure you take a few snaps of the reader to have proof of physical condition, & get paperwork from Sony store that it is in v.good condition when it left your care. This is essential, as problems over the physical condition of readers have arisen in the past.
Also make clear that you are aware of your rights under the Sale of Goods Act, and you know it is their resonsibility to sort it out or replace.
Your contract in law is with them, NOT Sony, so they are laible for any costs arising.
Sony stores are in fact nothing to do with Sony Corp. & are completely independent businesses, so do not assume you are being taken "care" of by Sony. They will almost certainly maintain this is not so.
They are simply shops selling Sony products, and have no other connection with Sony i.e. they do not represent Sony itself.
Again, under the Sale of Goods Act, they are responsible as your contract is with them as the seller of the device.
