Added Reboot and Manual FW Update commands

vesper/src/OTAManager/OTAManager.cpp

@@ -701,6 +701,54 @@ bool OTAManager::performManualUpdate(const String& channel) {
     return installFromSD("/firmware/staged_update.bin");
 }
 
+// ════════════════════════════════════════════════════════════════════════════
+// CUSTOM FIRMWARE UPDATE
+// ════════════════════════════════════════════════════════════════════════════
+
+bool OTAManager::performCustomUpdate(const String& firmwareUrl, const String& checksum, size_t fileSize) {
+    if (_status != Status::IDLE) {
+        LOG_WARNING("OTA update already in progress");
+        return false;
+    }
+
+    // Check if player is active
+    if (isPlayerActive()) {
+        LOG_ERROR("Cannot perform custom update: Player is active");
+        setStatus(Status::FAILED, ErrorCode::PLAYER_ACTIVE);
+        return false;
+    }
+
+    LOG_INFO("🔥 Starting CUSTOM firmware update...");
+    LOG_INFO("   URL: %s", firmwareUrl.c_str());
+    LOG_INFO("   Checksum: %s", checksum.isEmpty() ? "NOT PROVIDED" : checksum.c_str());
+    LOG_INFO("   File Size: %u bytes", fileSize);
+
+    if (checksum.isEmpty()) {
+        LOG_WARNING("⚠️  No checksum provided - update will proceed without verification!");
+    }
+
+    setStatus(Status::DOWNLOADING);
+
+    // Download firmware from custom URL to SD
+    if (!downloadToSD(firmwareUrl, checksum, fileSize)) {
+        LOG_ERROR("Custom firmware download failed");
+        return false;
+    }
+
+    LOG_INFO("✅ Custom firmware downloaded successfully");
+
+    // Install from SD
+    bool result = installFromSD("/firmware/staged_update.bin");
+
+    if (result) {
+        LOG_INFO("🚀 Custom firmware installed - device will reboot");
+    } else {
+        LOG_ERROR("❌ Custom firmware installation failed");
+    }
+
+    return result;
+}
+
 // Hardware variant management
 String OTAManager::getHardwareVariant() const {
     return _configManager.getHardwareVariant();