Today developer Yoti has released a new version of PSM Manager v2.0 for the Playstation Vita. Check out the release notes, changelog and the download link provided below.
Release Notes
As you probably know, PSM Manager, formerly known as NoPsmDrm Fixer, can work around the two annoying errors NP-2052-9 and CO-11136-2, mainly related to the call SCE_NP_AUTH_ERROR_INVALID_CREDETIAL which allows the activation of PSM titles (PlayStation Mobile).
In fact, PSM Manager is a VPK that allows you to ignore the DRM protection for any PlayStation Mobile content on PlayStation Vita and PlayStation TV, but also to correct these two errors as we can see on the screen above.