okay, can anyone help me out? i've been trying for the past few hours how to solve this issue. i went from 4.2.1 to 4.1 because i wanted to use this theme. but i realized that i cannot' use my 4.2.1 to restore back up to my 4.1 iphone. so now i am trying to go back into 4.2.1 but i cannot, i keep getting error 1600 and 2001 error message once. my baseband is currently: 01.59.00-ICE_2_6 i've been using tinyumbrella to start TSS server.