diff --git a/src/mcp_esptool_server/components/chip_control.py b/src/mcp_esptool_server/components/chip_control.py
index 5f3a02f..63fa102 100644
--- a/src/mcp_esptool_server/components/chip_control.py
+++ b/src/mcp_esptool_server/components/chip_control.py
@@ -153,7 +153,7 @@ class ChipControl:
             output = (stdout or b"").decode() + (stderr or b"").decode()
 
             if proc.returncode != 0:
-                return {"success": False, "error": output.strip()[:200]}
+                return {"success": False, "error": output.strip()}
             return {"success": True, "output": output}
 
         except asyncio.TimeoutError:
diff --git a/src/mcp_esptool_server/components/flash_manager.py b/src/mcp_esptool_server/components/flash_manager.py
index f28c2c7..501cbfb 100644
--- a/src/mcp_esptool_server/components/flash_manager.py
+++ b/src/mcp_esptool_server/components/flash_manager.py
@@ -60,7 +60,7 @@ class FlashManager:
             output = (stdout or b"").decode() + (stderr or b"").decode()
 
             if proc.returncode != 0:
-                return {"success": False, "error": output.strip()[:500]}
+                return {"success": False, "error": output.strip()}
 
             return {"success": True, "output": output}