From The XDAndroid Project
XDAndroid 2.2.1 Build FRX04 is the project's fourth release of the Froyo series of Android.
This system update was released on 21 January 2011.
Changes from FRX03 to FRX04
- Improved 3D performance, with fixes for WVGA devices (brought to you by [acl]) - IMPORTANT: this requires the accompanying rootfs release from 21 Jan (or later).
- Synced all minor upstream changes from AOSP (NOTE: This release does include the SMS bugfixes from the 2.2.2 release as seen in Nexus One builds)