The "relpkg" suffix indicates this is a Release Package containing board support files.

The prefix dx80ce820 was a decommissioned deep-space relay—one officially listed as silent since the Helios solar flare of ’41. syn213b was a handshake protocol reserved for autonomous cargo vessels, not a dead relay. And brelpkg ? That was the kicker. “Brel” was old-cypher slang for “breach” or “break,” and “pkg” meant a data package, but in this context, it was a cry for a manual override.