Note: This article is based on Mikrotik L009UiGS board with firmware 7.18.2.
1. Download WinBox from Mikrotik website, https://mikrotik.com/download. As I write this article, the version for WinBox is v3.41.
2. Open WinBox and search for your router. Click on the neighbors tab. You should be able to see your router mac address on the list. Click on your router and click Connect button. By default, the username for login to the router is admin and the password is given to you in the box attached to the quick guide.
3. The first that you need to do once you are able to connect to the router successfully is to change the password.
4. Once the password has been changed, the next step is for you to update the firmware. To do that, you will need to make the router accessible to the internet. What I did is that, using the Quick Set setting, go to Configuration > Mode - Bridge. Click Apply then Ok. Once it able to pick up the IP from the router, it should be able to connect to the internet and you should be able to update the firmware. To update the firmware, on the left side, go to System > RouterBOARD and click on Update button. Once the firmware has been updated, you will need to reboot the router.
5. Once the firmware has been updated, you can configure the PPPoE connection. To do so, go to Quick Set > Configuration > Mode - Bridge.