I had a fully functional Blackrained 3GS with the old bootrom (before the 40th week). What happened was After i installed some cydia Winterboard tweak, the phone got a little sluggish, so i restarted it, now its stuck at the apple logo screen !! I tried to DFU/Restore to 3.1.2 using official 3.1.2 firmware but apparently Apple doesnt sign 3.1.2 anymore, it gave that build error message u all must be familiar with ! I also tried to create a custom firmware through Pwnagetool on my mac and tried to restore through itunes (9.1.1), it gives error 1600. I am at a loss in this situation please help me !! Currently Im downloading an old version of itunes on my windows to try do the custom restore !!!
-Sid

-Sid