diff --git a/dist/index.cjs.js b/dist/index.cjs.js
index 04048df..96fbe76 100644
--- a/dist/index.cjs.js
+++ b/dist/index.cjs.js
@@ -177,7 +177,7 @@ class Updater {
         let packet = this.file.slice(this._fileProgress, this._fileProgress + this._packetSize);
         this._fileProgress += this._packetSize;
         return new Promise((resolve, reject) => {
-            this.bleObject.write(this.bleDeviceId, this._updaterServiceUUID, this._updateFileCharacteristicUUID, packet.buffer, () => {
+            this.bleObject.writeWithoutResponse(this.bleDeviceId, this._updaterServiceUUID, this._updateFileCharacteristicUUID, packet.buffer, () => {
                 resolve(true);
             }, (error) => {
                 this._fileProgress -= this._packetSize;
@@ -199,14 +199,14 @@ class Updater {
         // send a packet
         // check for error
         // write file length
-        return new Promise(async (resolve, reject) => {
+        return new Promise((resolve, reject) => {
             // start notify
-            this.bleObject.startNotification(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, async (rawData) => {
+            this.bleObject.startNotification(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, (rawData) => {
                 let dataView = new Uint8Array(rawData);
                 console.log(dataView);
                 if (dataView[0] == 1) {
                     // send file
-                    await this.sendNextPacket();
+                    this.sendNextPacket();
                     progressCallback(`Sending (${Math.floor((this._fileProgress * 100) / this._fileSize)}%), ${this._fileProgress} / ${this._fileSize}`);
                 }
                 else if (dataView[0] == 2) {
@@ -215,7 +215,7 @@ class Updater {
                     if (this._fileProgress >= this._fileSize) {
                         console.log("true");
                         // send agree
-                        await this.sendEndCmd(true);
+                        this.sendEndCmd(true);
                         progressCallback(`Complete!`);
                         this.bleObject.stopNotification(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, () => {
                             // success
@@ -227,7 +227,7 @@ class Updater {
                     else {
                         console.log("False");
                         // send disagree
-                        await this.sendEndCmd(false);
+                        this.sendEndCmd(false);
                         progressCallback(`Error, starting over: ${this._fileProgress} / ${this._fileSize}`);
                         this._fileProgress = 0;
                     }
@@ -253,7 +253,7 @@ class Updater {
             const buffer = new ArrayBuffer(4);
             let view = new Int32Array(buffer);
             view[0] = this._fileSize;
-            await this.bleObject.withPromises.write(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, buffer);
+            this.bleObject.withPromises.write(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, buffer);
         });
     }
 }
diff --git a/dist/index.es.js b/dist/index.es.js
index be84531..e34171a 100644
--- a/dist/index.es.js
+++ b/dist/index.es.js
@@ -175,7 +175,7 @@ class Updater {
         let packet = this.file.slice(this._fileProgress, this._fileProgress + this._packetSize);
         this._fileProgress += this._packetSize;
         return new Promise((resolve, reject) => {
-            this.bleObject.write(this.bleDeviceId, this._updaterServiceUUID, this._updateFileCharacteristicUUID, packet.buffer, () => {
+            this.bleObject.writeWithoutResponse(this.bleDeviceId, this._updaterServiceUUID, this._updateFileCharacteristicUUID, packet.buffer, () => {
                 resolve(true);
             }, (error) => {
                 this._fileProgress -= this._packetSize;
@@ -197,14 +197,14 @@ class Updater {
         // send a packet
         // check for error
         // write file length
-        return new Promise(async (resolve, reject) => {
+        return new Promise((resolve, reject) => {
             // start notify
-            this.bleObject.startNotification(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, async (rawData) => {
+            this.bleObject.startNotification(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, (rawData) => {
                 let dataView = new Uint8Array(rawData);
                 console.log(dataView);
                 if (dataView[0] == 1) {
                     // send file
-                    await this.sendNextPacket();
+                    this.sendNextPacket();
                     progressCallback(`Sending (${Math.floor((this._fileProgress * 100) / this._fileSize)}%), ${this._fileProgress} / ${this._fileSize}`);
                 }
                 else if (dataView[0] == 2) {
@@ -213,7 +213,7 @@ class Updater {
                     if (this._fileProgress >= this._fileSize) {
                         console.log("true");
                         // send agree
-                        await this.sendEndCmd(true);
+                        this.sendEndCmd(true);
                         progressCallback(`Complete!`);
                         this.bleObject.stopNotification(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, () => {
                             // success
@@ -225,7 +225,7 @@ class Updater {
                     else {
                         console.log("False");
                         // send disagree
-                        await this.sendEndCmd(false);
+                        this.sendEndCmd(false);
                         progressCallback(`Error, starting over: ${this._fileProgress} / ${this._fileSize}`);
                         this._fileProgress = 0;
                     }
@@ -251,7 +251,7 @@ class Updater {
             const buffer = new ArrayBuffer(4);
             let view = new Int32Array(buffer);
             view[0] = this._fileSize;
-            await this.bleObject.withPromises.write(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, buffer);
+            this.bleObject.withPromises.write(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, buffer);
         });
     }
 }
diff --git a/package.json b/package.json
index 1004479..6de1c5a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "updaterweblibrary",
-  "version": "1.0.20",
+  "version": "1.0.21",
   "description": "OTA Updater App frontend library",
   "repository": {
     "type": "git",