iMac Firmware Update 1.4 Addresses ATI 4850 Freezing Issues
Over the weekend, Apple issued an iMac EFI Firmware Update 1.4 which specifically addresses an intermittent system freeze that was occuring in iMacs with the ATI Radeon HD 4850 graphics card.
Once you download the software update, you must launch it manually as it will not be installed automatically.
To complete the firmware update process, please follow the instructions in the updater application (/Applications/Utilities/iMac EFI Firmware Update.app). The updater will launch automatically when the Installer closes.
An informal survey in our forums found that the majority of those who had problems found relief with the firmware update. The issue had generated a lengthy discussion on our forums as well as Apple's support forums.
The update also fixes wake-from-sleep issues in Boot Camp.
Popular Stories
Apple's next major iMac upgrade will be an OLED panel, according to ZDNet Korea, though it won't arrive until 2029 or 2030.
Apple has apparently asked Samsung Display, LG Display, and other suppliers to produce 24-inch OLED panel samples on their mass-production lines, targeting 600 nits of brightness and around 218 pixels-per-inch (PPI). The current iMac's 24-inch LCD offers 500 nits at the ...
Apple is planning a major upgrade to the iMac in 2029, adopting an OLED panel for the first time, according to ZDNet Korea.
Apple has apparently asked Samsung Display, LG Display, and other suppliers to produce 24-inch OLED panel samples on their mass-production lines, targeting 600 nits of brightness and around 218 pixels-per-inch (PPI). The current iMac's 24-inch LCD offers 500 nits at the ...
Apple is expected to unveil iOS 27 during its WWDC 2026 keynote on June 8, and there are already many rumored features and changes for iPhones.
The first developer beta of iOS 27 will likely be available immediately following the keynote, and a public beta typically follows in July. Following beta testing, the software update should be released to all users with a compatible iPhone in...
