diff --git a/platformio.ini b/platformio.ini
index 1696105..f21db17 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -8,7 +8,7 @@ framework = arduino
 lib_deps =
     adafruit/Adafruit TinyUSB Library@3.1.0
     fastled/FastLED@^3.9.0
-    h2zero/NimBLE-Arduino@^2.2.3
+    h2zero/NimBLE-Arduino@^1.4.0
 
 build_unflags =
     -DARDUINO_USB_MODE=1
diff --git a/src/ble_midi_transport.cpp b/src/ble_midi_transport.cpp
index 588dd3a..cd6559c 100644
--- a/src/ble_midi_transport.cpp
+++ b/src/ble_midi_transport.cpp
@@ -13,11 +13,11 @@ static NimBLECharacteristic* ble_char = nullptr;
 static bool device_connected = false;
 
 class ServerCallbacks : public NimBLEServerCallbacks {
-    void onConnect(NimBLEServer* server, NimBLEConnInfo&) override {
+    void onConnect(NimBLEServer* server) override {
         device_connected = true;
         Serial.println("[BLE] Client connected");
     }
-    void onDisconnect(NimBLEServer* server, NimBLEConnInfo&, int) override {
+    void onDisconnect(NimBLEServer* server) override {
         device_connected = false;
         Serial.println("[BLE] Client disconnected, restarting advertising");
         NimBLEDevice::startAdvertising();
@@ -25,7 +25,7 @@ class ServerCallbacks : public NimBLEServerCallbacks {
 };
 
 class CharCallbacks : public NimBLECharacteristicCallbacks {
-    void onWrite(NimBLECharacteristic* characteristic, NimBLEConnInfo&) override {
+    void onWrite(NimBLECharacteristic* characteristic) override {
         std::string value = characteristic->getValue();
         if (value.length() > 0 && instance) {
             instance->on_receive((const uint8_t*)value.data(), value.length());
@@ -83,13 +83,15 @@ bool BleMidiTransport::begin() {
     ble_char->setCallbacks(new CharCallbacks());
     Serial.println("[BLE] Callbacks set");
 
-    Serial.println("[BLE] Service created (auto-starts with server)");
+    Serial.println("[BLE] Starting service...");
+    ble_service->start();
+    Serial.println("[BLE] Service started");
 
     Serial.println("[BLE] Starting advertising...");
     NimBLEAdvertising* adv = NimBLEDevice::getAdvertising();
     adv->setName("JOC Midi");
     adv->addServiceUUID(BLE_MIDI_SERVICE_UUID);
-    adv->enableScanResponse(true);
+    adv->setScanResponse(true);
     adv->start();
 
     initialized = true;