How to upgrade DFX?

Could you please elaborate on the process of upgrading DFX? Are there any specific steps that need to be followed? Are there any prerequisites or requirements that need to be met before initiating the upgrade process? Is there a need to backup any data or settings before proceeding? Additionally, could you provide some guidance on how to identify the latest version of DFX and what benefits or new features might be included in the upgrade? Finally, are there any potential risks or issues that one should be aware of during the upgrade process, and how can these be mitigated or avoided?