A couple of months ago, I dropped my Lumia 520 and the glass cracked (it's still usable, though, screen and digitizer are working fine). I went to a repair shop and they were going to charge me 200 reais (about US$ 100) to replace the digitizer, so I decided to order a cheap replacement from a chinese online store. It finally arrived and I intend to replace it tomorrow. However, I read some reports that cheap digitizers stopped working with the Amber update. Does anybody know if they work with WP8.1?