diff --git a/dist/index.cjs.js b/dist/index.cjs.js
index a8ee5ae..c666f3e 100644
--- a/dist/index.cjs.js
+++ b/dist/index.cjs.js
@@ -178,9 +178,6 @@ class Updater {
         // this._fileProgress += this._packetSize;
         return new Promise((resolve, reject) => {
             this.bleObject.writeWithoutResponse(this.bleDeviceId, this._updaterServiceUUID, this._updateFileCharacteristicUUID, packet.buffer, () => {
-                console.log("Wrote");
-                console.log(packet.length);
-                this._fileProgress += packet.length;
                 resolve(true);
             }, (error) => {
                 this._fileProgress -= this._packetSize;
@@ -204,62 +201,62 @@ class Updater {
         // write file length
         return new Promise(async (resolve, reject) => {
             // set mtu
-            this.bleObject.requestMtu(this.bleDeviceId, this._packetSize, (mtu) => {
-                this._packetSize = mtu;
-                this.bleObject.startNotification(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, (rawData) => {
-                    let dataView = new Uint8Array(rawData);
-                    if (dataView[0] == 1) {
-                        // send file
-                        this.sendNextPacket();
-                        progressCallback(`MTU: ${this._packetSize}; Sending (${Math.floor((this._fileProgress * 100) / this._fileSize)}%), ${this._fileProgress} / ${this._fileSize}`);
-                    }
-                    else if (dataView[0] == 2) {
-                        // done logic
-                        console.log(`progress >= filesize: ${this._fileProgress} vs ${this._fileSize}`);
-                        if (this._fileProgress >= this._fileSize) {
-                            console.log("true");
-                            // send agree
-                            this.sendEndCmd(true);
-                            progressCallback(`Complete!`);
-                            this.bleObject.stopNotification(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, () => {
-                                // success
-                                resolve(true);
-                            }, (error) => {
-                                reject("Error: Failed to stop notify");
-                            });
-                        }
-                        else {
-                            console.log("False");
-                            // send disagree
-                            this.sendEndCmd(false);
-                            progressCallback(`Error, starting over: ${this._fileProgress} / ${this._fileSize}`);
-                            this._fileProgress = 0;
-                        }
-                    }
-                    else if (dataView[0] == 15) {
-                        // error cmd
-                        progressCallback(`Error on remote: ${this._fileProgress} / ${this._fileSize}`);
-                        reject("Error on remote");
-                    }
-                    else if (dataView[0] == 0) {
-                        // ignore no command
-                        progressCallback(`Board is on`);
+            this._packetSize = await this.bleObject.withPromises.requestMtu(this.bleDeviceId, this._packetSize);
+            // start notify
+            this.bleObject.startNotification(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, (rawData) => {
+                let dataView = new Uint8Array(rawData);
+                console.log(dataView);
+                if (dataView[0] == 1) {
+                    // send file
+                    this.sendNextPacket();
+                    progressCallback(`MTU: ${this._packetSize}; Sending (${Math.floor((this._fileProgress * 100) / this._fileSize)}%), ${this._fileProgress} / ${this._fileSize}`);
+                }
+                else if (dataView[0] == 2) {
+                    // done logic
+                    console.log(`progress >= filesize: ${this._fileProgress} vs ${this._fileSize}`);
+                    if (this._fileProgress >= (this._fileSize - this._packetSize)) {
+                        console.log("true");
+                        // send agree
+                        this.sendEndCmd(true);
+                        progressCallback(`Complete!`);
+                        this.bleObject.stopNotification(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, () => {
+                            // success
+                            resolve(true);
+                        }, (error) => {
+                            reject("Error: Failed to stop notify");
+                        });
                     }
                     else {
-                        // no command
-                        progressCallback(`Error on remote`);
-                        reject("Error: command does not exist");
+                        console.log("False");
+                        // send disagree
+                        this.sendEndCmd(false);
+                        progressCallback(`Error, starting over: ${this._fileProgress} / ${this._fileSize}`);
+                        this._fileProgress = 0;
                     }
-                }, (error) => {
-                    reject("Error: Failed to start notify");
-                    console.error(error);
-                });
-                const buffer = new ArrayBuffer(4);
-                let view = new Int32Array(buffer);
-                view[0] = this._fileSize;
-                this.bleObject.withPromises.write(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, buffer);
+                }
+                else if (dataView[0] == 15) {
+                    // error cmd
+                    progressCallback(`Error on remote: ${this._fileProgress} / ${this._fileSize}`);
+                    reject("Error on remote");
+                }
+                else if (dataView[0] == 0) {
+                    // ignore no command
+                    progressCallback(`Board is on`);
+                }
+                else {
+                    // should be the file progress
+                    let fileProgressView = new Uint32Array(rawData);
+                    this._fileProgress += fileProgressView[0];
+                    this.sendNextPacket();
+                }
+            }, (error) => {
+                reject("Error: Failed to start notify");
+                console.error(error);
             });
-            // start notify
+            const buffer = new ArrayBuffer(4);
+            let view = new Int32Array(buffer);
+            view[0] = this._fileSize;
+            this.bleObject.withPromises.write(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, buffer);
         });
     }
 }
diff --git a/dist/index.es.js b/dist/index.es.js
index 39cc726..fdb9cb4 100644
--- a/dist/index.es.js
+++ b/dist/index.es.js
@@ -176,9 +176,6 @@ class Updater {
         // this._fileProgress += this._packetSize;
         return new Promise((resolve, reject) => {
             this.bleObject.writeWithoutResponse(this.bleDeviceId, this._updaterServiceUUID, this._updateFileCharacteristicUUID, packet.buffer, () => {
-                console.log("Wrote");
-                console.log(packet.length);
-                this._fileProgress += packet.length;
                 resolve(true);
             }, (error) => {
                 this._fileProgress -= this._packetSize;
@@ -202,62 +199,62 @@ class Updater {
         // write file length
         return new Promise(async (resolve, reject) => {
             // set mtu
-            this.bleObject.requestMtu(this.bleDeviceId, this._packetSize, (mtu) => {
-                this._packetSize = mtu;
-                this.bleObject.startNotification(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, (rawData) => {
-                    let dataView = new Uint8Array(rawData);
-                    if (dataView[0] == 1) {
-                        // send file
-                        this.sendNextPacket();
-                        progressCallback(`MTU: ${this._packetSize}; Sending (${Math.floor((this._fileProgress * 100) / this._fileSize)}%), ${this._fileProgress} / ${this._fileSize}`);
-                    }
-                    else if (dataView[0] == 2) {
-                        // done logic
-                        console.log(`progress >= filesize: ${this._fileProgress} vs ${this._fileSize}`);
-                        if (this._fileProgress >= this._fileSize) {
-                            console.log("true");
-                            // send agree
-                            this.sendEndCmd(true);
-                            progressCallback(`Complete!`);
-                            this.bleObject.stopNotification(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, () => {
-                                // success
-                                resolve(true);
-                            }, (error) => {
-                                reject("Error: Failed to stop notify");
-                            });
-                        }
-                        else {
-                            console.log("False");
-                            // send disagree
-                            this.sendEndCmd(false);
-                            progressCallback(`Error, starting over: ${this._fileProgress} / ${this._fileSize}`);
-                            this._fileProgress = 0;
-                        }
-                    }
-                    else if (dataView[0] == 15) {
-                        // error cmd
-                        progressCallback(`Error on remote: ${this._fileProgress} / ${this._fileSize}`);
-                        reject("Error on remote");
-                    }
-                    else if (dataView[0] == 0) {
-                        // ignore no command
-                        progressCallback(`Board is on`);
+            this._packetSize = await this.bleObject.withPromises.requestMtu(this.bleDeviceId, this._packetSize);
+            // start notify
+            this.bleObject.startNotification(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, (rawData) => {
+                let dataView = new Uint8Array(rawData);
+                console.log(dataView);
+                if (dataView[0] == 1) {
+                    // send file
+                    this.sendNextPacket();
+                    progressCallback(`MTU: ${this._packetSize}; Sending (${Math.floor((this._fileProgress * 100) / this._fileSize)}%), ${this._fileProgress} / ${this._fileSize}`);
+                }
+                else if (dataView[0] == 2) {
+                    // done logic
+                    console.log(`progress >= filesize: ${this._fileProgress} vs ${this._fileSize}`);
+                    if (this._fileProgress >= (this._fileSize - this._packetSize)) {
+                        console.log("true");
+                        // send agree
+                        this.sendEndCmd(true);
+                        progressCallback(`Complete!`);
+                        this.bleObject.stopNotification(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, () => {
+                            // success
+                            resolve(true);
+                        }, (error) => {
+                            reject("Error: Failed to stop notify");
+                        });
                     }
                     else {
-                        // no command
-                        progressCallback(`Error on remote`);
-                        reject("Error: command does not exist");
+                        console.log("False");
+                        // send disagree
+                        this.sendEndCmd(false);
+                        progressCallback(`Error, starting over: ${this._fileProgress} / ${this._fileSize}`);
+                        this._fileProgress = 0;
                     }
-                }, (error) => {
-                    reject("Error: Failed to start notify");
-                    console.error(error);
-                });
-                const buffer = new ArrayBuffer(4);
-                let view = new Int32Array(buffer);
-                view[0] = this._fileSize;
-                this.bleObject.withPromises.write(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, buffer);
+                }
+                else if (dataView[0] == 15) {
+                    // error cmd
+                    progressCallback(`Error on remote: ${this._fileProgress} / ${this._fileSize}`);
+                    reject("Error on remote");
+                }
+                else if (dataView[0] == 0) {
+                    // ignore no command
+                    progressCallback(`Board is on`);
+                }
+                else {
+                    // should be the file progress
+                    let fileProgressView = new Uint32Array(rawData);
+                    this._fileProgress += fileProgressView[0];
+                    this.sendNextPacket();
+                }
+            }, (error) => {
+                reject("Error: Failed to start notify");
+                console.error(error);
             });
-            // start notify
+            const buffer = new ArrayBuffer(4);
+            let view = new Int32Array(buffer);
+            view[0] = this._fileSize;
+            this.bleObject.withPromises.write(this.bleDeviceId, this._updaterServiceUUID, this._updaterCommandCharacterisitcUUID, buffer);
         });
     }
 }
diff --git a/package.json b/package.json
index 8439f1b..aca90c3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "updaterweblibrary",
-  "version": "1.0.30",
+  "version": "1.0.31",
   "description": "OTA Updater App frontend library",
   "repository": {
     "type": "git",