The Hebrew Language has been supported in some Blackberry OS's for quite some time now, if you were able to hunt down one of the multi language OS's that contained this file. Earlier this year, files were release for OTA installation of just the Hebrew Language, and the files have now since been updated, to contain an OTA install for the Blackberry Tour as well!
This is great news for many people, considering the Tour is a world enabled phone, and many will be traveling with it! These OTA installs make it a one click and done deal, instead of having to reload a whole new OS onto the phone, which has often scared many away from attempting this.
Would having Hewbrew support on your Blackberry aid you? If so, hop on over to the OTA installs! (There is also a Jewish Calendar BB App for OTA download there as well!)