diff --git a/.flowconfig b/.flowconfig
index 3f410a6..f016288 100644
--- a/.flowconfig
+++ b/.flowconfig
@@ -1,5 +1,5 @@
 [ignore]
-.*/node_modules/.*
+.*/node_modules/react_native/.*
 
 [include]
 
@@ -8,4 +8,4 @@
 [options]
 
 [version]
-0.27.0
+0.28.0
diff --git a/FS.common.js b/FS.common.js
index a62bc76..c5a9447 100644
--- a/FS.common.js
+++ b/FS.common.js
@@ -272,19 +272,7 @@ var RNFS = {
     return RNFSManager.appendFile(filepath, b64);
   },
 
-  downloadFile(options: DownloadFileOptions): Promise<DownloadResult> {
-    if (arguments.length > 1) {
-      console.warn('Deprecated: Please see updated docs for `downloadFile`');
-
-      options = {
-        fromUrl: arguments[0],
-        toFile: arguments[1],
-        begin: arguments[2],
-        progress: arguments[3],
-        background: false
-      };
-    }
-
+  downloadFile(options: DownloadFileOptions): { jobId: number, promise: Promise<DownloadResult> } {
     if (typeof options !== 'object') throw new Error('downloadFile: Invalid value for argument `options`');
     if (typeof options.fromUrl !== 'string') throw new Error('downloadFile: Invalid value for property `fromUrl`');
     if (typeof options.toFile !== 'string') throw new Error('downloadFile: Invalid value for property `toFile`');
@@ -312,13 +300,23 @@ var RNFS = {
       progressDivider: options.progressDivider || 0
     };
 
-    return RNFSManager.downloadFile(bridgeOptions).then(res => {
-      subscriptions.forEach(sub => sub.remove());
-      return res;
-    });
+    return {
+      jobId,
+      promise: RNFSManager.downloadFile(bridgeOptions).then(res => {
+        subscriptions.forEach(sub => sub.remove());
+        return res;
+      })
+    };
   },
 
-  uploadFiles(options: UploadFileOptions): Promise<UploadResult> {
+  uploadFiles(options: UploadFileOptions): { jobId: number, promise: Promise<UploadResult> } {
+    if (!RNFSManager.uploadFiles) {
+      return {
+        jobId: -1,
+        promise: Promise.reject(new Error('`uploadFiles` is unsupported on this platform'))
+      };
+    }
+
     var jobId = getJobId();
     var subscriptions = [];
 
@@ -354,10 +352,13 @@ var RNFS = {
       method: options.method || 'POST'
     };
 
-    return RNFSManager.uploadFiles(bridgeOptions).then(res => {
-      subscriptions.forEach(sub => sub.remove());
-      return res;
-    });
+    return {
+      jobId,
+      promise: RNFSManager.uploadFiles(bridgeOptions).then(res => {
+        subscriptions.forEach(sub => sub.remove());
+        return res;
+      })
+    };
   },
 
   MainBundlePath: RNFSManager.RNFSMainBundlePath,
diff --git a/README.md b/README.md
index 0c3fd6b..48032bd 100644
--- a/README.md
+++ b/README.md
@@ -7,8 +7,9 @@ Native filesystem access for react-native
 - Removed attributes from `writeFile` and `appendFile` for iOS / Android consistency
 - `downloadFile` takes `options` object rather than parameters
 - `stopDownload` will cause the rejection of promise returned by `downloadFile`
-- `uploadFile` promise result `response` property is now `body`
+- `uploadFiles` promise result `response` property is now `body`
 - A boolean is no longer returned from any method except `exists`
+- `downloadFile` and `uploadFiles` return an object of the form `{ jobId: number, promise: Promise }`
 
 ## Usage (iOS)
 
@@ -242,7 +243,7 @@ RNFS.uploadFiles({
   },
   begin: uploadBegin,
   progress: uploadProgress
-}).then((response) => {
+}).promise.then((response) => {
     if (response.statusCode == 200) {
       console.log('FILES UPLOADED!'); // response.statusCode, response.headers, response.body
     } else {
@@ -345,7 +346,7 @@ Create a directory at `filepath`. Automatically creates parents and does not thr
 
 (IOS only): If `excludeFromBackup` is true, then `NSURLIsExcludedFromBackupKey` attribute will be set. Apple will *reject* apps for storing offline cache data that does not have this attribute.
 
-### `downloadFile(options: DownloadFileOptions): Promise<DownloadResult>`
+### `downloadFile(options: DownloadFileOptions): { jobId: number, promise: Promise<DownloadResult> }`
 
 ```
 type DownloadFileOptions = {
@@ -405,7 +406,7 @@ If `progressDivider` = 0, you will receive all `progressCallback` calls, default
 
 Abort the current download job with this ID. The partial file will remain on the filesystem.
 
-### (iOS only) `uploadFiles(options: UploadFileOptions): Promise<UploadResult>`
+### (iOS only) `uploadFiles(options: UploadFileOptions): { jobId: number, promise: Promise<UploadResult> }`
 
 `options` (`Object`) - An object containing named parameters