Core node v3.1.1 has been released. Follow the same instructions as before to update to the new version.
https://wiki.energi.world/en/update-core-node

Make sure to unlock the account for staking again after the upgrade.

Changelog:
Added
- Preimage exception package which fixes full sync
- Checkpoint for Asgard hard fork block
- Checkpoints for testnet
- Icon on Windows
Changed
- Various code optimizations
- Treasury proposal fee structure: from 100 NRG to 300 NRG + 0.2% of the amount
- Renamed autocollateralize to autocompounding
Fixed
- Unit tests
- Wrong port log message on testnet
- Balance issue in EVM affecting msg.sender
- Further enhancements to checkpoint registry