Upgraded new 4S to 6.0 as soon as I got it (big mistake). Receive email calendar invites from Blackberry users and Outlook users. I can't delete or edit them. Original sender updates the event (change time or name of event), it won't change after I open the update. Verizon referred me to Apple and they had me reinstall the IOS update. The problems persisted. After further research, she said the events that were created by Outlook, could not be changed in IOS6.0. You have to sync to your own Outlook, delete or change in Outlook, then resync again. Well I guess it applies to invites fom Blackberry users too. She won't admit to it but maybe she's not allowed to say the word "Blackberry". Why do I have to buy Outlook so that I can Delete an Event that someone with a Blackberry had sent to me?
I asked her to guide me through a downgrade to the previous version of the OS. She said that she could not; it was not supported.
How ARROGANT that is of APPLE. They think that their software is so good that nobody will need to downgrade. Their Quality has gone downhill fast (just web search the other 6.0 problems: Maps, Battery Life, WiFi, Skype, Youtube.).
This phone is going back to Verizon!
It's you choice to update or not . When you have any smartphone you are told once downloaded your not told how to go back. See other topics same thing.
Well Apple decided to not take that option in mind for their operating system. Perhaps you can send a request to Apple for a future feature of their software.
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.