I'm running local wallet version 1.2.8 from the Burst team releases page on an ubuntu 16.10, with OpenJDK RE 1.8.0_8u131-b11-0ubuntu1.16.10.2-b11.
If I download the blockchain from db.burst-team.us, unzip the contents into burst_db, and start the server, I get a warning that I have forged the last 10 blocks and I'm probably on a fork. The height of the most recent block is 359321, from May 12. The page says "Downloading blockchain" in the bottom right-hand corner, but no new blocks show up, and if I try to post transactions to the network I'm told I have to wait for the download to complete.
If start with now burst_db directory, I just get the genesis block, and then nothing else.
Any suggestions about how to debug this? I'm thinking maybe some firewall is blocking my access to the network. What ports / protocols does it use?