Once your Leap is restored, you will be on OS 10.3.3. You cannot officially update further. Here is what to do next:

If you're still having trouble finding the autoloader, feel free to provide more context or details about your issue, and I'll do my best to help.

Ensure your Leap has at least 30% charge. Then, . Do not put it in standby – hold the power button and select “Power Off” (or let the battery drain if frozen). If the device is frozen in a reload error, that counts as “off” for our purposes.