fix: OTA

src/client/index.js

@@ -199,15 +199,32 @@ class SporeApiClient {
   /**
    * Update firmware on the device
    * @param {Buffer|Uint8Array} firmwareData - Firmware binary data
+   * @param {string} filename - Name of the firmware file
    * @returns {Promise<Object>} Update response
    */
   async updateFirmware(firmwareData, filename) {
-    // Send the raw firmware data directly to the SPORE device
-    // The SPORE device expects the file data, not re-encoded multipart
+    // Create multipart form data manually for Node.js compatibility
+    const boundary = '----WebKitFormBoundary' + Math.random().toString(16).substr(2, 8);
+    
+    let body = '';
+    
+    // Add the firmware file part
+    body += `--${boundary}\r\n`;
+    body += `Content-Disposition: form-data; name="firmware"; filename="${filename}"\r\n`;
+    body += 'Content-Type: application/octet-stream\r\n\r\n';
+    
+    // Convert the body to Buffer and append the firmware data
+    const headerBuffer = Buffer.from(body, 'utf8');
+    const endBuffer = Buffer.from(`\r\n--${boundary}--\r\n`, 'utf8');
+    
+    // Combine all parts
+    const finalBody = Buffer.concat([headerBuffer, firmwareData, endBuffer]);
+    
+    // Send the multipart form data to the SPORE device
     return this.request('POST', '/api/node/update', {
-      body: firmwareData,
+      body: finalBody,
       headers: {
-        'Content-Type': 'application/octet-stream'
+        'Content-Type': `multipart/form-data; boundary=${boundary}`
       }
     });
   }