I own an Nvidia Shield tablet, and Nvidia has released an update to Android 5.1. I have a rooted device and may upgrade soon. So I have some questions:

1. Will I be able to install this while rooted?
2. If I tried, could it brick my device?
3. If I installed it would it unroot me?
4. If so how would I re-root? I rooted by unlocking the bootloader and installing CWM by the instructions at [here](http://www.ibtimes.co.uk/how-root-nvidia-shield-tablet-android-5-0-lollipop-install-cwm-recovery-1481041). 
5. I unlocked the boot-loader, if I re-root, would it erase my data or brick my device?