Release Candidate Firmware V1.21 RC4

[XORadmin]

For whatever reason the update on RC3 does not work for me.  After successful upgrade I get a blank screen.  I've tried several times now with no luck. Downgrading back to 1.20 worked fine but the same issue occurred when installing it again.

Ah sorry. I uploaded a new RC3 again. I shouldn't do the maintaining things late at night :-)
So some of you would have to download again. For some it'll work already.