You are right.
I was looking for an RB411 for sale and couldn't find one. As you stated, the current RB411 variants come with an L4 license.
How do I run The Dude server?The client is just a remote viewer for server instance. You cannot run syslog server in the client application. It runs in server side only.
That's exactly what I did and now the gps works.download page mikrotik - all packages for mipsbe - and there is package -> GPS
/ip firewall filter add chain=input comment="Accept Tiktool" dst-port=8728 protocol=tcp
/system gps set enabled=no :delay 15; /port set 0 baud-rate=4800 parity=odd :delay 15; /port set 0 baud-rate=4800 parity=odd /system gps set enabled=yes port=usb set-system-time=no
/interface wireless set 0 security-profile=profile1