I've updated to iOS6.01 and SpagoBI 3.6 and the Mobile engine does not show the 'root directory' in the Document browser anymore. So I can login, but after the login I only have the possibility to logout.
If I use Chrome in order to login, it works fine. I can move to the reports without a problem.
In SpagoBI 3.51 in combination with the previous version of iOS, it worked fine.
You need to jailbreak your iOS device to get root access. If you want to access it without jailbreaking, you need to get the latest version of app in the form of side loaded app on your iOS devices using Tutuapp vip download.