Time for some pie (with cream)
Steps:
1. Downloaded cm-10.1-20130327-NIGHTLY-grouper.zip and copied to internal SD. Verified MD5 checksum (
2dae7fcdd17b8f6be5ff1f7eb0b5ee27).
2. Reboot into Recovery (TWRP).
3. Created backup.
4. Flashed cm-10.1-20130327-NIGHTLY-grouper.zip
6. Wipe cache partition + Dalvik Cache.