update

src/znordic_device_info_mgr.c

@@ -1,7 +1,7 @@
 #include "znordic_device_info_mgr.h"
 
 void device_info_read_sn(sn_t* sn) {
-  const char* sn_str = "M1001000000002";
+  const char* sn_str = "M1001000000004";
   memcpy(sn->sn, sn_str, sizeof(sn->sn));
 }