I'm using SVN in Xcode 4 as my source control; but can't see any option to revert to an older revision? Either a 'revert' or an 'update to revision' command? The 'Update' option always seems to update to the HEAD.
Of course - I can do this on the command-line, but can't believe there's no way to do it within Xcode...
Does anyone know where it's hidden? Or is there really no such option?
Unfortunately the SCM functionality in 4.0 is fairly limited. You can commit, switch branches, branch/merge, diff previous versions, update to HEAD, but you can't revert.
We all expect this to get better in successive updates but it does seem like a rather silly omission. The Time-Machine-like diff version picker seems the perfect place to put the UI, so I'd expect it to appear there when it's finally supported.
You can "Discard Changes". That will revert the selected file(s).
Just a work around: As it isn't possible to revert with Xcode - you could use any SVN tool e.g Tortoise on a Windows machine and this Tutorial.
If you just need to compare a method or so you could also just simply compare to an older version by going to Organizer -> Respositories -> Your Project -> below in the history click the file -> View Changes. (Xcode 4)
If you screw up your project file you could still go oldschool and copy a working revision of the file to an usb stick by using Tortoise and replacing it in your project. That's what I just did ;)
This is kinda old question, but I manage to find a way to find and revert to old versions. As it is a Mac built in feature, not a xcode thing, it will find ALL saved versions of a specific file. But it can save you on hard times, like it saved me :~
Summing up: I've opened the "file.m" I need to recover with TextEdit. Then I browse to:
File > Revert To > Browse All Versions
There I manage to find all versions of the file and could pick the one that I need.
来源：https://stackoverflow.com/questions/5417687/where-is-the-revert-option-in-xcode-4s-source-control