hmmm yes I have also tried a different proxy address (010.128.001.069) and don't seem to have a problem. What CDA are you using? Maybe you can try 1211-7710, it is a customized Brazil one. When my phone booted up after flashing with SEUS, at first I got spanish prompts on the setup wizard but I was easily able to change it to English. During the setup wizard there is a section that prompts if you want SE to set up your phone settings for you. If you have a Rogers SIM card, I think it detects you are on the Rogers network and it actually auto-configured the goam APN for me automatically. You might need to do a master reset on your phone, maybe you mucked something up after flashing