what is the best way to save/backup my phone book and all my settings for sms, mms and internet connections? How can i backup my WLAN settings?
Some people have trouble using content copier (PC Suite) after they had reinstalled the backup with PC Suite on the new flashed N80IE.
How did you saved your settings and phone book before flashing?
As far as I know the only way to do a reliable complete backup is by using the content copier, but as you've noted this has caused a few problems for certain users. You only other real option here is to take manual backups of your photo's and music and to tranfer your contacts and calander to something like Outlook. Then after formatting you can manually restore your media and just re-sync your phone with out look from there. Not exactly ideal but it causes far fewer issues that way.