updated 09:15 am EST, Fri March 6, 2009
AirPort, Time Cap. 7.4.1
Apple has released a combined update for AirPort base stations and the Time Capsule, bringing all of the devices' firmware up to v7.4.1. Though mainly intended for new dual-band models, the firmware can also be applied to older hardware; in the latter case it enables remote administration, and remote access to attached USB drives through Back to My Mac, though not for an AirPort Express. Creating Time Machine backups on a Time Capsule has also been made more reliable.
For the latest Capsule and AirPort Extreme, the firmware is said to resolve uncovered technical issues. Back to My Mac disk sharing should now be more reliable, and clients should no longer be disconnected when waking from sleep. Further dealt with is a problem in which redirecting SMTP port services would disable IP-layer networking. Both applications of the firmware bundle all recent security updates.