Update checkpoint to new side-chain

app/protocol/flows/v4/blockrelay/ibd.go

@@ -85,7 +85,8 @@ func (flow *handleIBDFlow) runIBDIfNotRunning(block *externalapi.DomainBlock) er
 		return err
 	}
 	log.Criticalf("Found highest shared chain block %s with peer %s", highestSharedBlockHash, flow.peer)
-	checkpoint, err := externalapi.NewDomainHashFromString("05ff0f2e1d201dcaee7c5e567cc2c1d42ca3cce9fefbd3b519dc68b5bb89d0b9")
+	if highestSharedBlockFound {
+		checkpoint, err := externalapi.NewDomainHashFromString("efd297d4ff50c02571268bd47894503d2c8d02a0b2e0efa926fca193b00ec2b6")
 		if err != nil {
 			return err
 		}
@@ -106,6 +107,7 @@ func (flow *handleIBDFlow) runIBDIfNotRunning(block *externalapi.DomainBlock) er
 				return nil
 			}
 		}
+	}
 
 	shouldDownloadHeadersProof, shouldSync, err := flow.shouldSyncAndShouldDownloadHeadersProof(block, highestSharedBlockFound)
 	if err != nil {
@@ -329,7 +331,6 @@ func (flow *handleIBDFlow) syncPruningPointFutureHeaders(consensus externalapi.C
 		}
 	})
 
-	count := 0
 	for {
 		select {
 		case ibdBlocksMessage, ok := <-blockHeadersMessageChan: