This is what I found, I first searched for RCA owners who upgraded to Nelly's firmware but was not finding any so I switched over to RCA owners who upgraded to LaView's firmware. I will be searching this afternoon again for Nelly's firmware but wanted to share what I found so far.
LaView firmware on RCA owners:
New RCA HSDB2A 3MP Doorbell IP Camera Chadsturgill
New RCA HSDB2A 3MP Doorbell IP Camera camCanuck
Hi there,
I'm running three of the RCA HSDB2A's on LaView's firmware. I have doorbells at each of my garage doors, so I use them as a security camera of sorts. They are flashed (LaView) and have the logo removed. They are also active on my Q-See DVR using ONVIF. I haven't tried to put them on Nelly's firmware.
If you are looking to pick up a few, I picked the three units I have from Jet.com. Right now they are going for $79.50. The description says "scuffed box," but mine arrived in perfect condition.