My new WRT54GL is making a horrible loud whine. I need to send it back to newegg for another replacement. So of course I need to revert back to the Linksys firmware. Can you please tell me if it is done in this order and correctly? 1. In Tomato. Restore default router settings. 2. Log back in 3. Erase all data in NVRAM memory 4. Log back in 5. Upgrade with stock Linksys firmware Are those the correct steps?