Note: the f/w files all have the same name! They are in separate folders to identify them. The following is the MD5 hash of the file itself (as it must appear on your USB memory stick) NOT of the folder:

Downgrade_2.05SP2_to_2.02SP2: f7c861576fe9efeaf08c3e449f3527f0 

Upgrade_to_2.04sp1: bcf73565352391935f3a9651d30776ee

Upgrade to 2.05sp2: 9c28690d8d5a5690b7340fda943f5549