China's moon rover is alive and analyzing moon rocks

From wikipedia:

The rover, Yutu, reached the moon on 2013/12/14, encountered operational difficulties after about one earthly month, though it continued to gather useful information for some months afterward.

From the OP:

"The rover has recently beamed back data"

I haven't found any explanation on how it started sending data again, if it just fixed itself, or if a patch was sent up etc...

The report of scientific findings: http://www.nature.com/ncomms/2015/151222/ncomms9880/full/nco...