Can't flash CWM after flashing MIUI v6

May 1, 2013
Hi, I'm trying to flash CWM but both MIUI v6's Updater app and Mi Recovery won't let me do that.

If I open the Updater app, then I tap on "Select update package" and select the ZIP package I get an error similar to "Can't update now. Tap OK to report this error to our developers." (translated from Italian).

Instead, if I use the Mi Recovery (renaming the file to and putting it in the root of the storage) I get "Install failed! Error applying update".

With MIUI v5 I remember it was as easy as downloading the ZIP and opening it with the Updater app... what can I do? The CWM version I'm trying to flash is the latest from M1cha (