This page describes the format of the file stored in CXI ExeFS:/logo.
The Logo contains distribution licensing Binary data. (Types: Nintendo, Licensed, Published, or Distributed) Additionally it could have no license (type None). System applications and applets that interact with the Home Menu are typically set to type 'none' as they don't display that information.
This file is a LZ11 compressed DARC. The last 0x20-bytes of the decompressed data is a HMAC SHA256 hash over the actual DARC.