If you have the blue led on for about 5 seconds and then it blinks off for about half a second, repeating over and over the bootloader is fine.
Go to the thread
https://forum.librepilot.org/index.php?topic=208.0 and download the fw_revolution_resurrect2-1.opfw attached to the first post.
Hook your board up and click rescue. After a blink cycle it will go into rescue mode and you'll have a button "Open...", click it and select the fw_revolution_resurrect2-1.opfw file. Click flash and it will flash the resurrection firmware onto the board. Give it a few seconds after it reaches 100% and then click "Boot". The board will boot up, connect to the GCS, and give you a "Firmware Version Mismatch" warning pop-up. Click OK and then "Upgrade & Erase". Once that finishes you'll be back to normal.
edit: It's been fixed in the next release.