Nokia has just released a firmware update v211.12 for Nokia E75 and you can update your device either via NSU (Nokia Software Updater) or Ovi Suite.

Nokia E75 firmware Update v211.12 changelog:

* Corrections done concerning e-mail client: contacts and calendar sync starts failing specifically with exchange 2003 SP2 server
* Corrections done concerning OMA DM remote configuration problem
* Corrections done concerning FOTA server profile, wherein PC-suite has been set as the default profile instead of Nokia, this has been corrected.
* Improvements to the device lock functionality