10.08.2011 - MT SE suite v1.4
What's new:

Added support for MT Box with serial 4xxxxxxx (Symb inside, DB2020 inside, DB3xxx inside and MT2COM)
Added support for Win 64
Added new SonyEricsson drivers required for Win 64 (ggsetup-2.2.0.5.exe) for db2020 and db3xxx
Added Symbian drivers (open_4.40.6.0_usb_signed_drivers)

Download here