diff --git a/meshtastic/config.proto b/meshtastic/config.proto
index 4ba2ee1..6b842d4 100644
--- a/meshtastic/config.proto
+++ b/meshtastic/config.proto
@@ -576,6 +576,16 @@ message Config {
        * WLAN Band
        */
       LORA_24 = 13;
+
+      /*
+       * Ukraine 433mhz
+       */
+      UA_433 = 14;
+
+      /*
+       * Ukraine 868mhz
+       */
+      UA_868 = 15;
     }
 
     /*
diff --git a/meshtastic/mesh.proto b/meshtastic/mesh.proto
index 67dc362..9aae938 100644
--- a/meshtastic/mesh.proto
+++ b/meshtastic/mesh.proto
@@ -13,6 +13,7 @@ import "meshtastic/config.proto";
 import "meshtastic/module_config.proto";
 import "meshtastic/portnums.proto";
 import "meshtastic/telemetry.proto";
+import "meshtastic/xmodem.proto";
 
 /*
  * a gps position
@@ -639,9 +640,10 @@ message Waypoint {
   uint32 expire = 4;
 
   /*
-   * If true, only allow the original sender to update the waypoint.
+   * If greater than zero, treat the value as a nodenum only allowing them to update the waypoint.
+   * If zero, the waypoint is open to be edited by any member of the mesh.
    */
-  bool locked = 5;
+  uint32 locked_to = 5;
 
   /*
    * Name of the waypoint - max 30 chars
@@ -1288,8 +1290,15 @@ message FromRadio {
      */
     Channel channel = 10;
 
-    /* Queue status info */
+    /*
+     * Queue status info
+     */
     QueueStatus queueStatus = 11;
+
+    /*
+     * File Transfer Chunk
+     */
+    XModem xmodemPacket = 12;
   }
 }
 
@@ -1328,6 +1337,12 @@ message ToRadio {
      * (Sending this message is optional for clients)
      */
     bool disconnect = 4;
+
+    /*
+     * File Transfer Chunk
+     */
+
+    XModem xmodemPacket = 5;
   }
 }
 
diff --git a/xmodem.options b/xmodem.options
new file mode 100644
index 0000000..3af6125
--- /dev/null
+++ b/xmodem.options
@@ -0,0 +1,6 @@
+# options for nanopb
+# https://jpa.kapsi.fi/nanopb/docs/reference.html#proto-file-options
+
+*XModem.buffer max_size:128
+*XModem.seq int_size:16
+*XModem.crc16 int_size:16
diff --git a/xmodem.proto b/xmodem.proto
new file mode 100644
index 0000000..6fdd1b5
--- /dev/null
+++ b/xmodem.proto
@@ -0,0 +1,27 @@
+syntax = "proto3";
+
+package meshtastic;
+
+option java_package = "com.geeksville.mesh";
+option optimize_for = LITE_RUNTIME;
+option go_package = "github.com/meshtastic/go/generated";
+option java_outer_classname = "XmodemProtos";
+option csharp_namespace = "Meshtastic.Protobufs";
+
+message XModem {
+  enum Control {
+    NUL   = 0;
+    SOH   = 1;
+    STX   = 2;
+    EOT   = 4;
+    ACK   = 6;
+    NAK   = 21;
+    CAN   = 24;
+    CTRLZ = 26;
+  }
+
+  Control control = 1;
+  uint32 seq = 2;
+  uint32 crc16 = 3;
+  bytes buffer = 4;
+}
\ No newline at end of file