I modified fb_embedded2.pas originally written for Delphi by Fikret Hasovic. Now it works with Lazarus!
Here is the poll on Lazarus web site
Now, ZeosDBO 6.6.2 RC version is ready to download here and the help file can be download here. Many bugs have been fixed since the 6.6.1 version. Here is some of the Firebird bugs and general bugs that have been fixed since 6.6.1 version: