diff --git a/dist/index.cjs.js b/dist/index.cjs.js
index cd9bdb1..c787704 100644
--- a/dist/index.cjs.js
+++ b/dist/index.cjs.js
@@ -177,6 +177,7 @@ class Updater {
         let packet = this.file.slice(this._fileProgress, this._fileProgress + this._packetSize);
         return new Promise((resolve, reject) => {
             this.bleObject.write(this.bleDeviceId, this._updaterServiceUUID, this._updateFileCharacteristicUUID, packet.buffer, () => {
+                this._fileProgress += this._packetSize;
                 resolve(true);
             }, (error) => {
                 reject(error);
@@ -205,7 +206,7 @@ class Updater {
                 if (dataView[0] == 1) {
                     // send file
                     await this.sendNextPacket();
-                    progressCallback(`Sending (${Math.floor((this._fileProgress * 100) / this._fileSize)})`);
+                    progressCallback(`Sending (${Math.floor((this._fileProgress * 100) / this._fileSize)}), ${this._fileProgress} / ${this._fileSize}`);
                 }
                 else if (dataView[0] == 2) {
                     // done logic
diff --git a/dist/index.es.js b/dist/index.es.js
index f04eb23..6e2038e 100644
--- a/dist/index.es.js
+++ b/dist/index.es.js
@@ -175,6 +175,7 @@ class Updater {
         let packet = this.file.slice(this._fileProgress, this._fileProgress + this._packetSize);
         return new Promise((resolve, reject) => {
             this.bleObject.write(this.bleDeviceId, this._updaterServiceUUID, this._updateFileCharacteristicUUID, packet.buffer, () => {
+                this._fileProgress += this._packetSize;
                 resolve(true);
             }, (error) => {
                 reject(error);
@@ -203,7 +204,7 @@ class Updater {
                 if (dataView[0] == 1) {
                     // send file
                     await this.sendNextPacket();
-                    progressCallback(`Sending (${Math.floor((this._fileProgress * 100) / this._fileSize)})`);
+                    progressCallback(`Sending (${Math.floor((this._fileProgress * 100) / this._fileSize)}), ${this._fileProgress} / ${this._fileSize}`);
                 }
                 else if (dataView[0] == 2) {
                     // done logic
diff --git a/package.json b/package.json
index 5fc93c2..c269d6a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "updaterweblibrary",
-  "version": "1.0.16",
+  "version": "1.0.17",
   "description": "OTA Updater App frontend library",
   "repository": {
     "type": "git",