Several users on the Apple forum have recently been noticing jitters and random squeaking noises when their iPod Touch 3G is connected to a third party docking station. According to these users, the issue has been primarily occurring ever since the device was updated to the iOS 4.1 platform. Docking stations where the problem has been observed include Wadia 170iTransport, Onkyo ND-S1, Musical Fidelity V-Dac and Musical Fidelity KW DM25 DAC.
According to a Wadia support executive, Apple has worked on this issue for the future versions and that the jitter issue should not affect devices running iOS 4.2 (when that’s released).
Some users have however reported having seen improvements after a full factory restore. A user writes,
I think i have found a solution. What I did was a full factory restore, and when using the dock set ‘Autolock’ in the settings menu to never. It seems to have sorted the problem for me.
Are you one of those who is affected? Did this resolution work for you? Write in the comments.