Исходное сообщение
"Официально вышел FreeBSD 7.2-RELEASE" Отправлено DEC, 04-Май-09 10:50
Вообще-то в релнотах написано так: "Beginning with FreeBSD 6.2-RELEASE, binary upgrades between RELEASE versions (and snapshots of the various security branches) are supported using the freebsd-update(8) utility. The binary upgrade procedure will update unmodified userland utilities, as well as unmodified GENERIC or SMP kernels distributed as a part of an official FreeBSD release. The freebsd-update(8) utility requires that the host being upgraded has Internet connectivity." Так что 6.4 можно обновить бинарно.