diff --git a/CHANGELOG.md b/CHANGELOG.md
index 28fd73b..ebd7a57 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,7 +10,11 @@ If you were at `firehose-core` version `1.0.0` and are bumping to `1.1.0`, you s
 
 ## Unreleased
 
-* Added `--substreams-tier2-max-concurrent-requests` to limit the number of concurrent requests to the tier2 substreams service.
+* Added API Key authentication to `NewFirehoseFetchClient`.
+
+* Fixed `tools check merged-blocks` examples using block range (range should be specified as `[<start>]?:[<end>]`).
+
+* Added `--substreams-tier2-max-concurrent-requests` to limit the number of concurrent requests to the tier2 Substreams service.
 
 ## v1.2.4
 
@@ -49,7 +53,6 @@ If you were at `firehose-core` version `1.0.0` and are bumping to `1.1.0`, you s
 	and is expanded as is.
 
 * Added `Beacon` to known list of Block model.
-* Added api key authentication to `NewFirehoseFetchClient`
 
 ## v1.2.3
 
diff --git a/cmd/tools/check/check.go b/cmd/tools/check/check.go
index 97bf7e4..aebbf1f 100644
--- a/cmd/tools/check/check.go
+++ b/cmd/tools/check/check.go
@@ -69,7 +69,8 @@ func NewCheckCommand[B firecore.Block](chain *firecore.Chain[B], rootLog *zap.Lo
 		"./sf-data/storage/merged-blocks"
 		"gs://<project>/<bucket>/<path>" -s
 		"s3://<project>/<bucket>/<path>" -f
-		"az://<project>/<bucket>/<path>" -r "10 000 - 1 000 000"
+		"az://<project>/<bucket>/<path>" -r ":1_000_000"
+		"az://<project>/<bucket>/<path>" -r "100_000:1_000_000"
 	`)
 
 	toolsCheckForksCmd.RunE = toolsCheckForksE
diff --git a/cmd/tools/firehose/tools_download_from_firehose.go b/cmd/tools/firehose/tools_download_from_firehose.go
index 0ff8562..558a76f 100644
--- a/cmd/tools/firehose/tools_download_from_firehose.go
+++ b/cmd/tools/firehose/tools_download_from_firehose.go
@@ -27,7 +27,7 @@ func NewToolsDownloadFromFirehoseCmd[B firecore.Block](chain *firecore.Chain[B],
 		RunE:  createToolsDownloadFromFirehoseE(chain, zlog),
 		Example: firecore.ExamplePrefixed(chain, "tools download-from-firehose", `
 			# Adjust <url> based on your actual network
-			mainnet.eth.streamingfast.io:443 1000 2000 ./output_dir
+			mainnet.eth.streamingfast.io:443 1000:2000 ./output_dir
 		`),
 	}