Serviio on DS211j. How to upgrade in the future?

Hi everybody.

Following Patters great guide I managed to install Serviio 0.51 on my DS211j with DSM 3.0 as a total linux noob.

Few questions:
How can I upgrade to future versions of Serviio (just saw 0.52)?
Can DSM be upgraded without killing the Serviio installation?

Thanks in advance

[zip]

How can I upgrade to future versions of Serviio (just saw 0.52)?

http://www.serviio.org/component/content/article/21#q8