Requesting a JCOP applet, such as the NXP Fido2, can be done through the NXP website. However, it's important to note that not all applets are readily available for download and may require a specific request to be made. This is often the case for secure files, such as the FIDO2 applet you mentioned.
If you're unable to find the FIDO2 applet in your secure files area or through the search function, it's likely that you'll need to make a specific request. To do this, you can use the 'Contact Us' form on the NXP website. Be sure to include as much detail as possible about the applet you're requesting, including the name (FIDO2 in this case) and any relevant details from the presentation you mentioned.
In terms of finding documents, presentations, applets, config files, etc., the NXP website has a comprehensive 'Documentation' section where you can find a wide range of resources. You can access this section from the main menu on the NXP homepage. From there, you can use the search function to find specific resources. If you're unable to find what you're looking for, the 'Contact Us' form can also be used to request specific documents or files.
While the process may seem a bit fragmented, it's designed to ensure that secure files are only accessible to those who need them. So, while it may require a bit of back and forth, it's in place to maintain the security and integrity of NXP's products and services.