add code to find why update not work

android/app/src/main/java/com/bolan/android/modules/update/Updater.java

@@ -123,6 +123,7 @@ public class Updater extends ReactContextBaseJavaModule {
         }
     }
 
+    @ReactMethod
     public synchronized void cancel(final Promise promise) {
         cancel = true;
         promise.resolve(null);

src/native/Updater.js

@@ -18,6 +18,7 @@ const { Updater } = NativeModules;
  * @returns {Promise.<null>}
  */
 export const update = async (url, cb) => {
+  console.log(Updater.update);
   return Updater.update(url, cb);
 };