diff --git a/src/js/configure.js b/src/js/configure.js
index 9812aae..905e65a 100644
--- a/src/js/configure.js
+++ b/src/js/configure.js
@@ -188,7 +188,7 @@ export class Configure {
   static download = async (deviceType, radioType, config, firmwareUrl, options) => {
     if (config.platform === 'stm32') {
       const entry = await this.#fetch_file(firmwareUrl, 0, (bin) => this.#configureSTM32(bin, deviceType, radioType, options))
-      return [entry.data]
+      return [entry]
     } else {
       const list = []
       const version = document.getElementById('version').value
diff --git a/src/js/index.js b/src/js/index.js
index 92932f4..fec6b2c 100644
--- a/src/js/index.js
+++ b/src/js/index.js
@@ -452,7 +452,7 @@ deviceNext.onclick = (e) => {
   _('etx').disabled = true
   _('wifi').disabled = true
   _('stlink').disabled = true
-  selectedModel.upload_methods.forEach((k) => { _(k).disabled = false })
+  selectedModel.upload_methods.forEach((k) => { if (_(k)) _(k).disabled = false })
 
   setDisplay('#step-device', false)
   setClass('#step-2', 'active')
diff --git a/src/js/xmodem.js b/src/js/xmodem.js
index 9c13654..c880cae 100644
--- a/src/js/xmodem.js
+++ b/src/js/xmodem.js
@@ -346,7 +346,7 @@ class XmodemFlasher {
     } else {
       this.log('\nWe were already in bootloader\n')
     }
-    return this.xmodem.send(binary[0])
+    return this.xmodem.send(binary[0].data)
   }
 
   checkStatus = (response) => {