About This File
@wildcard has released a File Decrypter for PS4's on firmware 4.05, here is a quote from the source:
QuoteThis will dump all the usermodules self/sprx/sdll/sexe onto your usb in the /405 folder decrypted some like eboots are renamed because i was too lazy to implement folder generation to mimic the ps4 fs but you can change to code to suit whatever you choose to