diff --git a/java_tools/ConfigDefinition.jar b/java_tools/ConfigDefinition.jar
index f3809d56e8..bd850bc6bd 100644
Binary files a/java_tools/ConfigDefinition.jar and b/java_tools/ConfigDefinition.jar differ
diff --git a/java_tools/configuration_definition/src/main/java/com/rusefi/FirmwareVersion.java b/java_tools/configuration_definition/src/main/java/com/rusefi/FirmwareVersion.java
index ee86922495..b94935633f 100644
--- a/java_tools/configuration_definition/src/main/java/com/rusefi/FirmwareVersion.java
+++ b/java_tools/configuration_definition/src/main/java/com/rusefi/FirmwareVersion.java
@@ -12,6 +12,6 @@ public class FirmwareVersion {
 
     @NotNull
     public String encode() {
-        return Long.toString(crc32);
+        return "snap_" + (crc32 & 0xFFFF);
     }
 }