It's part of the troubleshooting process - we've isolated FW upgrade issue, now that's the next step. Just give me the benefit of the doubt and do that, then test and see if any difference.

OK, now it's clearer what you're trying to achieve. If connection type is bridge, the PPPoE session (where the username and password are put in) should be initiated on the device that is bridged to...

@Pimbox Check this post for detailed info. You may find this story useful too.

It should work for ethernet ports, as well as for the wireless connections.

Where do you select that bridge, put some screenshots.

@Zidko Is than you are looking for: