diff --git a/class1.protocol.md b/class1.protocol.md
index 36573b6..8e1a89d 100644
--- a/class1.protocol.md
+++ b/class1.protocol.md
@@ -1115,7 +1115,7 @@ Part of the VSCP boot-loader functionality. This is the negative response after
 
 ## Type=50 (0x32) - Block data ACK. :id=type50
 ```
-VSCP_TYPE_PROTOCOL_BLOCK_DATA_CHUNK_ACK
+VSCP_TYPE_PROTOCOL_START_BLOCK_ACK
 ```
 **Not mandatory** Only needed if a VSCP boot loader algorithm is used.
 
@@ -1125,7 +1125,7 @@ Part of the VSCP boot-loader functionality. This is the positive response after
 
 ## Type=51 (0x33) - Block data NACK. :id=type51
 ```
-VSCP_TYPE_PROTOCOL_BLOCK_DATA_CHUNK_NACK
+VSCP_TYPE_PROTOCOL_START_BLOCK_NACK
 ```
 **Not mandatory.** Only needed if a VSCP boot-loader algorithm is used.
 
diff --git a/class2.level1.protocol.md b/class2.level1.protocol.md
index 249a0c7..c02b27b 100644
--- a/class2.level1.protocol.md
+++ b/class2.level1.protocol.md
@@ -1347,7 +1347,7 @@ Part of the VSCP boot-loader functionality. This is the negative response after
 ## Type=50 (0x32) - Block data ACK. :id=type50
 
 ```
-VSCP_TYPE_PROTOCOL_BLOCK_DATA_CHUNK_ACK
+VSCP_TYPE_PROTOCOL_START_BLOCK_ACK
 ```
 **Not mandatory** Only needed if a VSCP boot loader algorithm is used.
 
@@ -1361,7 +1361,7 @@ Part of the VSCP boot-loader functionality. This is the positive response after
 ## Type=51 (0x33) - Block data NACK. :id=type51
 
 ```
-VSCP_TYPE_PROTOCOL_BLOCK_DATA_CHUNK_NACK
+VSCP_TYPE_PROTOCOL_START_BLOCK_NACK
 ```
 **Not mandatory.** Only needed if a VSCP boot-loader algorithm is used.
 
diff --git a/vscp_specification_history.md b/vscp_specification_history.md
index 0cd2f1e..411d4ed 100644
--- a/vscp_specification_history.md
+++ b/vscp_specification_history.md
@@ -2,9 +2,6 @@
 
  | Date       | By   | Description |
  | ---------- | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
-|2024-11-28 | AKHE | Renamed VSCP_TYPE_PROTOCOL_START_BLOCK_ACK and VSCP_TYPE_PROTOCOL_START_BLOCK_NACK 
-to VSCP_TYPE_PROTOCOL_BLOCK_DATA_CHUNK_ACK and VSCP_TYPE_PROTOCOL_BLOCK_DATA_CHUNK_NACK |
-|2024-11-28| AKHE | Reverted Changed name for tokens VSCP_TYPE_PROTOCOL_START_BLOCK_ACK, VSCP_TYPE_PROTOCOL_START_BLOCK_NACK rename to VSCP_TYPE_PROTOCOL_CHUNK_ACK, VSCP_TYPE_PROTOCOL_CHUNK_NACK | 
 |2024-11-28| AKHE | Fixed non working links | 
 |2024-11-28| AKHE | Changed name for tokens VSCP_TYPE_PROTOCOL_START_BLOCK_ACK, VSCP_TYPE_PROTOCOL_START_BLOCK_NACK rename to VSCP_TYPE_PROTOCOL_CHUNK_ACK, VSCP_TYPE_PROTOCOL_CHUNK_NACK | 
 |2024-11-21| AKHE | Added missing BLE transport frame format |