Hello,
If phone works well with one firmware and can not works with another version it may be hardware <-> software incompatibility.
How to get latest flash files and new language pack files:
Q: I don't see in support area flash files that I need (Languages that I need). How to get it ?
A: Try to find phone with languages that you need, read flash and send file to
[email protected]
Flash file will be tested, converted to required format and uploaded into support area as soon as possible.