Wish the original NVIDIA Shield Portable had Android 5.1 and Google Cast support? Now it does, but it comes at a price. A new, optional update for the Shield bestows the handheld with latest version of Lollipop, the ability to be a Chromecast / Google Cast source device and fixes a glitch that made Google Play Books unusable -- but in trade, it takes away Miracast support and permanently removes a handful of apps. Specifically, the update uninstalls Sonic 4: Episode II, Expendable: Rearmed and the original Android browser for compatibility reasons. Bummer.
The update is optional -- but if you want the latest Android features on the aging device, you don't really have a choice. Check out the official update at the source link below.