Everything in this guide is simple, except for tearing the glass plate off. I tried with a hairdryer (1200 Watt) first, without success. Then I used a hot air gun (at 400 deg. Celcius, about 750 Fahrenheit). It worked like a charm, but my rubber edge is somewhat shiny, and in one area there's a fingerprint now. Nevertheless, this operation saved me 400 Euros and I'm happy I did it.