Apple today said it has updated its initial Mac OS X 10.4.7 Update for Intel-based Macs, although it has not provided a new update via Software Update or on the Web. The revised update does not affect PowerPC-systems, according to the company. An email to its security list noted that "the install package that upgrades a Mac OS X v10.4.6 (Intel) system is being revised.... to provide several files related to OpenGL performance that were missing. Only the package that upgrades a Mac OS X v10.4.6 (Intel) system to Mac OS X v10.4.7 (Intel) is being changed. All other Mac OS X v10.4.7 install packages remain unchanged." [update: Apple has posted the updated disk image with the newer checksum]

Apple also said that the change being made to the install package does not affect the
security fixes provided in the package. As of press time, the Mac OS X 10.4.7 for Intel update page listed the 131MB with a SHA1 checksum of "2a25ed61d586b71ba7282fb896b2c910785ff358" and not the newer "10aa57dfccd63accb0939a894cea202a8910fb45" as noted in the email. It is unclear whether those who have already installed Mac OS X 10.4.7 on Intel-based Macs will need to reinstall.