This is interesting - - I have had 3 DC v3.05 failures running SK 5.6. The first one (no Web browser access) I recovered from with a simple power off - - then on. The second one (no Web browser access) I had to do a restore to the AP Mode (PB1 Function 1) then get back into my Client Network. The third one (again no Web browser access) restore to the AP Mode did not work, so I had to do a Factory Reset (PB1 Function 3), and all was well after I reset all my parameters to work on my Client Network. The time between failures varied from less than 24 hours to the 2 to 4 day range.
Hope this is helpful. Clear as mud!! Ken