diff --git a/packages/usb/eeprom.js b/packages/usb/eeprom.js
index 3b903231..20da1abd 100755
--- a/packages/usb/eeprom.js
+++ b/packages/usb/eeprom.js
@@ -9,23 +9,5 @@ if (eepromTransfer === undefined) {
     process.exit(1);
 }
 
-const device = uhk.getUhkDevice();
-device.write(uhk.getTransferData(new Buffer([uhk.usbCommands.launchEepromTransfer, eepromTransfer.operation, eepromTransfer.configBuffer])));
-const buffer = Buffer.from(device.readSync());
-const responseCode = buffer[0];
-if (responseCode !== 0) {
-    console.error(`Write user config to eeprom failed. Response code: ${responseCode}`);
-    process.exit(1);
-}
+//    const buffer = await uhk.writeDevice(device, [uhk.usbCommands.launchEepromTransfer, eepromTransfer.operation, eepromTransfer.configBuffer]);
 
-function waitUntilKeyboardBusy() {
-
-    device.write(uhk.getTransferData(new Buffer([uhk.usbCommands.getDeviceState])));
-    const keyboardStateBuffer = Buffer.from(device.readSync());
-
-    if (keyboardStateBuffer[1] === 1) {
-        setTimeout(waitUntilKeyboardBusy, 200);
-    }
-}
-
-waitUntilKeyboardBusy();
diff --git a/packages/usb/uhk.js b/packages/usb/uhk.js
index 4b6cbc20..651e52aa 100644
--- a/packages/usb/uhk.js
+++ b/packages/usb/uhk.js
@@ -276,7 +276,7 @@ async function updateFirmwares(firmwarePath) {
     await uhk.updateModuleFirmware(uhk.moduleSlotToI2cAddress.leftHalf, uhk.moduleSlotToId.leftHalf, `${firmwarePath}/modules/uhk60-left.bin`);
 }
 
-async function writeUserConfig(device, configBuffer, isHardwareConfig) {
+async function writeConfig(device, configBuffer, isHardwareConfig) {
     const chunkSize = 60;
     let offset = 0;
     let chunkSizeToRead;
@@ -303,6 +303,19 @@ async function writeUserConfig(device, configBuffer, isHardwareConfig) {
     }
 }
 
+async function applyConfig(device) {
+    await uhk.writeDevice(device, [uhk.usbCommands.applyConfig]);
+}
+
+async function launchEepromTransfer(device, operation, configBuffer) {
+    const buffer = await uhk.writeDevice(device, [uhk.usbCommands.launchEepromTransfer, operation, configBuffer]);
+    isBusy = true;
+    do {
+        const buffer = uhk.writeDevice(device, [uhk.usbCommands.getDeviceState]);
+        isBusy = buffer[1] === 1;
+    } while (isBusy);
+};
+
 uhk = exports = module.exports = moduleExports = {
     bufferToString,
     getUint16,
@@ -324,7 +337,9 @@ uhk = exports = module.exports = moduleExports = {
     waitForKbootIdle,
     updateModuleFirmware,
     updateFirmwares,
-    writeUserConfig,
+    writeConfig,
+    applyConfig,
+    launchEepromTransfer,
     usbCommands: {
         getDeviceProperty       : 0x00,
         reenumerate             : 0x01,
diff --git a/packages/usb/update-firmwares.js b/packages/usb/update-firmwares.js
index fc3bc03d..880d0f8d 100755
--- a/packages/usb/update-firmwares.js
+++ b/packages/usb/update-firmwares.js
@@ -1,4 +1,5 @@
 #!/usr/bin/env node
+const fs = require('fs');
 const program = require('commander');
 const tmp = require('tmp');
 const decompress = require('decompress');
@@ -32,9 +33,11 @@ require('shelljs/global');
         await uhk.updateFirmwares(firmwarePath);
 
         if (program.overwriteUserConfig) {
-            exec(`${__dirname}/write-config.js ${firmwarePath}/devices/uhk60-right/config.bin`);
-            exec(`${__dirname}/apply-config.js`);
-            exec(`${__dirname}/eeprom.js writeUserConfig`);
+            const device = uhk.getUhkDevice();
+            const configBuffer = fs.readFileSync(`${firmwarePath}/devices/uhk60-right/config.bin`);
+            await uhk.writeConfig(device, configBuffer, false);
+            await uhk.applyConfig(device);
+            await uhk.launchEepromTransfer(device, uhk.eepromOperations.write, uhk.eepromTransfer.writeUserConfig);
         }
 
         config.verbose = false;
diff --git a/packages/usb/write-config.js b/packages/usb/write-config.js
index 75b81f37..73c782e8 100755
--- a/packages/usb/write-config.js
+++ b/packages/usb/write-config.js
@@ -20,7 +20,7 @@ const uhk = require('./uhk');
     const configBin = program.args[0];
     const isHardwareConfig = program.hardwareConfig;
     const configTypeString = isHardwareConfig ? 'hardware' : 'user';
-    let configBuffer = fs.readFileSync(configBin);
+    const configBuffer = fs.readFileSync(configBin);
 
     await uhk.writeUserConfig(device, configBuffer, isHardwareConfig);
-})();
\ No newline at end of file
+})();