Why was Nagra au experimental?
Nagra has lots of EMM keys for AU and I cannot find them. So in theory if you provide these keys, Nagra au should work. Without this data I cannot test the code and so nagra is experimental until full data is available. Nagra is no longer experimental since release 1.2a, but were only tested on Hotbird. AU and decryption work with all providers. On Hispasat providers Nagra should work as well. However, you need the correct named eprom files and appropriate keys for au and decryption.