Just found this on GSM Arena Forum:
Hey. I wonder if you still have this problem. I also experienced the blue screen thing. Here's what you need to do:
1. Download the original 2.2.1 version from here:
2. Extract the file. Then copy the dload folder to your SD card. I suggest you format your SD card before putting the folder.
3. Turn off your phone, remove the battery, then insert your SD card. Plug your phone onto the PC. Make sure it does not have it's battery inserted.
4. Then, it will install the firmware on its own.
It's a bit crude but worth a try if you're desperate. No guarantees given. Neil.