Login Redirect to Primary Blog's Dashboard

Hi everybody,

I want to redirect user to primary blog dashboard when they logged in from main site.I can’t do with WPMU DEV’s login redirect. Also I’ve read some hacks for this,

https://premium.wpmudev.org/blog/7-goodies-from-our-secret-wpmu-bag-of-hacks-tricks-and-tools/

http://bjorsq.net/blog/2010/06/17/redirect-to-primary-blog/

I can redirect main blog but not dashboard.

Any idea?

Thanks.