1. This is for the 8300 not the 8320.
2. Version is the same except for maybe included languages.
3. There is a note above for TMo users.
4. Since it's released by a carrier, it's not technically a beta anymore.



4.5.0.37 is 4.5.0.37 regardless of the carrier it's released by. The only differences are the languages they include for their countries.

(Dialog Sri Lanka doesn't have the 8300 so they don't have an OS for the 8300.)