
Originally Posted by
stanekfeli
I had the same issue and I was going nuts... I found some solutions on various forums and they were all about security certificates and how to manually edit them. Too complicated.
If you are trying to install new stuff on your phone, there is a good chance you just got your new phone or you just flashed it, modded it and whatnot. There is also a good chance that you skipped the initial welcome wizard which, among others, lets you set the time/date on your phone. If so, any security certificate will be expired as far as your phone is concerned, thus "Operation Failed" or similar issues become plentiful.
Set your correct date/time and try again. My date was 01/01/1999 before I updated it. Everything works like a charm now.