www.woodmann.com/crackz/Flexsdk.htm
CrackZ's FLEXlm SDK's
Just select what you want and login with the username / password you have been given. It ought to be that simple (but something tells me it won't be ;-) ).
If you have any missing SDK's and would like to contribute them to this archive (for the good of the scenes reverse engineers), please do not hesistate to contact me ;-).