Hi,
what to be filled for the following field "Checkpoint for fast sync" and “Fee Recipient Address (only fallback)” when I try to update lighthouse for my dappnode?
Checkpoint sync is up to you, fee recipient should be set to the lido EL rewards vault, which is 0x388C818CA8B9251b393131C08a736A67ccB19297 on mainnet ( you can double-check here: 🌐 Mainnet | Lido Docs)