I know this is quite an old thread, but I do have a couple questions.
1) Does anyone know what the newest version of the Dual Mode/SIP Firmware is for the 5330?  I know 5.X was posted in this thread, but I have found a copy of 6.  Anyone know if there is a version 7, 8, or later?
2) Reading through some of the stuff that others posted, I was about to use the tag <web_logo1> in version 5 to display a custom logo, however, this tag is not work in version 6.  Is there a new tag for Version 6?
3) I have the 5310 conference module for the 5330.  Does anyone know how to get this to work in SIP mode?  Is there a file I for the TFTP site to make it work?
4) Is it possible to have more than 1 version of the firmware on the TFTP site?