I have tried the no chem rom 2.0 and it worked for most of the features but not the internet connection. I was getting a can't connect for unknown reasons. I am with Bell Mobility in canada, and am actually working for them, after the update I was not even hitting the AAA on the network no more ( one of the perks of working there I get access to that system) what I did notice is that in the EPST under M.IP profiles no chem's rom had additional fields that the stock rom did not, and most of the new fields were populated with gibberish info, I have attempted to switch the prone out of MOBILE IP and into SIMPLE IP but that still did not fix the issue. any help would be appreciated. So far the only 6.1 that i have been able to run somewhat ok has been DCD 2.x version, the main problem with that is that the device would freeze in calls quite often, so for now have reverted to the stock rom. BTW here's a link for the newest update yet to be launched for bell users and this device to fix some BT related issues as well a freezing during calls
http://download.yousendit.com/807BE9D668CE6AC9 but still no official REV A or GPS