diff --git a/ledger_device_sdk/src/io.rs b/ledger_device_sdk/src/io.rs
index 886bd33d..eee6d000 100644
--- a/ledger_device_sdk/src/io.rs
+++ b/ledger_device_sdk/src/io.rs
@@ -1,4 +1,4 @@
-#[cfg(target_os = "nanox")]
+#[cfg(any(target_os = "nanox", target_os = "stax", target_os = "flex"))]
 use crate::ble;
 #[cfg(not(any(target_os = "stax", target_os = "flex")))]
 use ledger_secure_sdk_sys::buttons::{get_button_event, ButtonEvent, ButtonsState};
@@ -196,7 +196,7 @@ impl Comm {
             APDU_USB_CCID => {
                 ccid::send(&self.apdu_buffer[..self.tx]);
             }
-            #[cfg(target_os = "nanox")]
+            #[cfg(any(target_os = "nanox", target_os = "stax", target_os = "flex"))]
             APDU_BLE => {
                 ble::send(&self.apdu_buffer[..self.tx]);
             }
@@ -387,7 +387,7 @@ impl Comm {
             }
             seph::Events::CAPDUEvent => seph::handle_capdu_event(&mut self.apdu_buffer, spi_buffer),
 
-            #[cfg(target_os = "nanox")]
+            #[cfg(any(target_os = "nanox", target_os = "stax", target_os = "flex"))]
             seph::Events::BleReceive => ble::receive(&mut self.apdu_buffer, spi_buffer),
 
             seph::Events::TickerEvent => {
diff --git a/ledger_device_sdk/src/lib.rs b/ledger_device_sdk/src/lib.rs
index 7d76c310..0c14c0f6 100644
--- a/ledger_device_sdk/src/lib.rs
+++ b/ledger_device_sdk/src/lib.rs
@@ -7,7 +7,7 @@
 #![feature(generic_const_exprs)]
 #![feature(cfg_version)]
 
-#[cfg(target_os = "nanox")]
+#[cfg(any(target_os = "nanox", target_os = "stax", target_os = "flex"))]
 pub mod ble;
 
 #[cfg(feature = "ccid")]
diff --git a/ledger_secure_sdk_sys/build.rs b/ledger_secure_sdk_sys/build.rs
index b109f923..801efe87 100644
--- a/ledger_secure_sdk_sys/build.rs
+++ b/ledger_secure_sdk_sys/build.rs
@@ -570,6 +570,12 @@ impl SDKBuilder {
                             .to_str()
                             .unwrap(),
                     )
+                    .header(
+                        self.bolos_sdk
+                            .join("lib_blewbxx_impl/include/ledger_ble.h")
+                            .to_str()
+                            .unwrap(),
+                    )
             }
             _ => (),
         }
@@ -745,6 +751,19 @@ fn finalize_flex_configuration(command: &mut cc::Build, bolos_sdk: &Path) {
 
     command
         .target("thumbv8m.main-none-eabi")
+        .file(bolos_sdk.join("src/ledger_protocol.c"))
+        .file(bolos_sdk.join("lib_blewbxx/core/auto/ble_gap_aci.c"))
+        .file(bolos_sdk.join("lib_blewbxx/core/auto/ble_gatt_aci.c"))
+        .file(bolos_sdk.join("lib_blewbxx/core/auto/ble_hal_aci.c"))
+        .file(bolos_sdk.join("lib_blewbxx/core/auto/ble_hci_le.c"))
+        .file(bolos_sdk.join("lib_blewbxx/core/auto/ble_l2cap_aci.c"))
+        .file(bolos_sdk.join("lib_blewbxx/core/template/osal.c"))
+        .file(bolos_sdk.join("lib_blewbxx_impl/src/ledger_ble.c"))
+        .include(bolos_sdk.join("lib_blewbxx/include"))
+        .include(bolos_sdk.join("lib_blewbxx/core"))
+        .include(bolos_sdk.join("lib_blewbxx/core/auto"))
+        .include(bolos_sdk.join("lib_blewbxx/core/template"))
+        .include(bolos_sdk.join("lib_blewbxx_impl/include"))
         .include(bolos_sdk.join("target/flex/include/"))
         .flag("-fropi")
         .flag("-frwpi")
diff --git a/ledger_secure_sdk_sys/src/c/src.c b/ledger_secure_sdk_sys/src/c/src.c
index 7b92b374..5542e4d1 100644
--- a/ledger_secure_sdk_sys/src/c/src.c
+++ b/ledger_secure_sdk_sys/src/c/src.c
@@ -327,7 +327,7 @@ int c_main(void) {
         
     #ifdef HAVE_BLE
         memset(&G_io_asynch_ux_callback, 0, sizeof(G_io_asynch_ux_callback));
-        LEDGER_BLE_init();
+        BLE_power(1, NULL);
     #endif
 
     #if !defined(HAVE_BOLOS) && defined(HAVE_PENDING_REVIEW_SCREEN)