Default defalt browser / rom

i have had a android phone since the g1 came out with tmobile. I have had to switch to different phone company's because of myself moving. We first had sprint and I had the evo. Now with that phone I had no trouble and I loved it. But because of family they decided to go with At&t. So I got the n1 because at that time they had no real android phone. When I had the evo I never had any trouble with it. I Love you could copy and past Unlike the n1 ... And I noticed when I go to download pictures from the default browser on the n1. It tell me that the download was unsuccessful. Now this is not on all web pages just certain ones. Manly www.asianescapades.com... Now I would fig that with the same operating system I would not have this trouble.. When I use opera I can do most thing with it but still have trouble with opera.
Now with that I was thinking is their a way to flash the evo ROM on the n1 ? or another ROM. With same kind of features. PLEASE HELP ME OUT... email me at bikepilot@gmail.com