I have resurrected a long disconnected Verizon Moto Droid A855 which has been rooted and is working well on wifi only. I am using it to make Skype calls around the house and browse the net. I wanted to install the Chrome browser but the warning I received was that my OS was not current (it is 2.2.3). Since I'm not connected to Verizon now for OTA updating, can the OS be updated using wifi? As I mentioned, it is rooted so are there any apps that can make this phone even more useful using wifi only?