diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go
index 1b20abb940..668d225d7a 100644
--- a/internal/ethapi/api.go
+++ b/internal/ethapi/api.go
@@ -55,7 +55,7 @@ import (
 // allowed to produce in order to speed up calculations.
 const estimateGasErrorRatio = 0.015
 
-var errBlobTxNotSupported = errors.New("blob-tx not supported")
+var errBlobTxNotSupported = errors.New("signing blob transactions not supported. Use clef to sign. Submit via eth_sendRawTransaction.")
 
 // EthereumAPI provides an API to access Ethereum related information.
 type EthereumAPI struct {
diff --git a/tests/testdata b/tests/testdata
index fa51c5c164..ee3fa4c86d 160000
--- a/tests/testdata
+++ b/tests/testdata
@@ -1 +1 @@
-Subproject commit fa51c5c164f79140730ccb8fe26a46c3d3994338
+Subproject commit ee3fa4c86d05f99f2717f83a6ad08008490ddf07