Rename the genesis_snapshot.bin to full_snapshot.bin.
Make sure your C2 (Chrysalis Phase 2) Hornet node has no database and no prior snapshot files.
Place the full_snapshot.bin in the directory as defined in the snapshots.fullPath config option (this option
contains the full path including the file name).
Adjust protocol.networkID to the same value as used in
the -genesis-snapshot-file-network-id="<network-id-for-chrysalis-phase-2>" flag. (This should not really be
necessary as the C2 Hornet version will ship with the appropriate default values).
Control that the corresponding protocol.publicKeyRanges are correct.
Start your C2 Hornet node and add peers via the dashboard.