updated 03:00 pm EST, Mon November 22, 2010
Makes 40-plus security fixes
The iOS 4.2.1 firmware, posted earlier today, also includes a number of changes not widely publicized by Apple. Among these are enhancements to FaceTime, which can now be triggered using Voice Control or from within an SMS conversation. The video calling technology also newly supports Bluetooth accessories.
The font in Notes can be changed through the Settings app, and ICS files can now be imported into Calendar. SMS and MMS text tones have been added, including the option of setting custom tones for each contact. Some other improvements involve new parental controls for things like account settings and app deletion.
Bugfixes address glitches in audio recorded with a fourth-generation iPod touch, and problems with car stereo playback when connected via USB. Security notes show that over 40 security vulnerabilities have been closed, in areas such as profiles, CoreGraphics, Mail and iAd. The vast majority were in WebKit, the engine underlying iOS' Safari web browser.