I have to mention: We do NOT use interim-updates and suffer the same problem.So the main question is:
Does PPPoE server on MikroTik drop connections if there are timeouts on interim-updates...?
What is that ? Where do you set it up ?
edit. My PPPoEs ask for interim updates, might this help?
How do I restore ROS ? From the BIOS prompt, via serial ?yes, you should be able to restore RouterOS just fine. We will check why SD card didn't work.
/int bri sett set use-ip-firewall-for-vlan=yes
/int bri sett set use-ip-firewall=yes