It seems my RYTM broke, or became crazy while using Overbridge. It was working fine until some pads stopped playing synth sounds. Then they all went off, I can only play synth machines from RS and CP pads, by changing the default machine of those.
Tried reinstalling the OS, resetting the KIT, but it seems that Overbridge REALLY messed up with the internal electronics of the RYTM. I haven’t read any post mentioning anything similar (the forum search is not really good), but please if you’ve seen something similar point it out. I already created a support request though as it looks really bad 
A word of warning to all of you of the dangers of Overbridge. I used the RYTM for 6 months with no problemas at all before started trying Overbridge.
Be careful.
UPDATE 1: It seems the problem affected only the current project, I created a new one and I can hear all sounds. I guess I should move all the kits, patterns and everything to a new project and see what happens. I’ll keep updating the post.
UPDATE 2: Luckily after recreating the project it went back to normal. I did a backup of the current project, created an empty new project, and then restored the backup in there.
It was a really unusual thing anyway, if this had happened while playing live, it would have been bad.