UPDATE:
I contacted http://sequencing.roche.com and asked them about the software, and they responded to me. They said that the 454 business is down and so public download links for the related software aren't available anymore, but 454 software can still be downloaded from their ftp servers.
They also gave me a login so that I could download the software.
So there you go, if somebody else is looking to download Newbler they can send an inquiry.
Hello, I am wondering if you got access to the software or not. I am looking to use Newbler for my research and I contacted Roche too but they said they cannot give me the software. If anyone can please share the software and access I would be really grateful. Thank you