Happy New Year from Firebird-slash-dot-NET world. I was not in lounge mode last few days and hence you can enjoy version 4.1.0.0 of FirebirdClient You can get the bits from NuGet (EF6-ready version) or from FirebirdSQL.org site (or directly).

All changes can be found in tracker. This version contains only bug fixes (for bugs found ;)) in new connection pooling introduced in previous version.

Hit the NuGet.