Mandatory for every node operator. Past the H6 gate, nodes older than v1.4.7 are turned away at
the handshake.
What's fixed
Nodes were crashing in the pruning processor on a UTXO commitment mismatch. The commitments
written during the duplicated-block burst of August 13 can't be re-derived, so every pruning
cycle failed the sanity check. v1.4.7 reconciles them with a pinned residue, on both the pruning
and the IBD path. The ledger itself was never affected.
Upgrade
Stop the node, git pull or replace the binary, start it again.
Miners: move to v0.4.6.