Here they are, all in one convenient zip file. The link is good for 7 days. The patches for 200/400/1000 release 3.5, 3.6 and 3.7 are in the zip file, as well as the OAM patch for the 50. Note that there are dependency patches for the 50. Those are:
BCM050.081-SOFTWARE-MANAGEMENT or later version
BCM050.096-SU Service Update #2
BCM050.095-ELMTMNG-CLIENT_INSTALLER-CARTRIDGE or later version
BCM050.140-FEPS or later version
The SU #2 patch is 160MB, bigger than I know how to easily deliver. Also note that on a BCM 50 you will see an option for "pre 2007 DST rules". On a BCM 200/400/1000, you will not see that option.
There are no dependencies for the 200/400/1000.