Users are complaining that the recently released operating-system update for their music players is causing a somewhat serious electrical problem for their music systems.
According to iLounge.com, users are complaining that iPod Classics whose firmware has recently been upgraded to Version 1.1 are sending residual electrical pulses through the headphone jack -- as well as the iPod docking connection (on the bottom of every music player) -- when the iPods are turned off. Those pulses, measured at 500mv of DC, could conceivably cause damage to any attached equipment.
Stereophile.com is reporting that most users of iPod Classics on both headfi.com (a Web site for a super-high-end headphone amplifier manufacturer) and Apple users forums reported only that they had experienced "hiss," "static" or "buzzing" after updating the player's firmware.A few users reported the upgrade either froze their iPods (Apple replaced their iPods) or the upgrade removed their stored music files. As per company policy, there has been no official response from Apple as to any problem with iPod Classic upgrades or any related fixes.