iPod Classic Firmware 1.1 WARNING - Head-Fi: Covering Headphones, Earphones and Portable Audio

nine · 01-19-2008, 09:27 PM

iPod Classic Firmware 1.1 WARNING

Hi all

Just updated my iPod classic to the 1.1 firmware, and was experiencing a lot of weird noise in my mini^3 when the power in the iPod was off. Took it down to the workbench and did some investigating.

What I found was ~.5v of DC on the line out whenever the ipod is off. This could be really bad for your headphones if you are connected through a DC coupled amplifier (like my mini^3).

I also plugged it into my scope, and verified the .5v is usually just DC, but that occasionally (maybe 10% of the time) it's got some triangular pulses on it.

I'd suggest people stay away from the 1.1 update

--
nine
null sig (for now)

delaril · 01-19-2008, 09:58 PM

That doesn't sound healthy... sounds like something you should report to Apple - is that possible?

zumaro · 01-19-2008, 11:32 PM

Ahh the explanation for what so many of us are experiencing - hiss and static noises after the iPod is turned off. Well done Apple - your quality control department must have been fired by now with crap update after crap update slipping through?

nine · 01-19-2008, 11:34 PM

Originally Posted by delaril

That doesn't sound healthy... sounds like something you should report to Apple - is that possible?

I've filed it as a bug through ADC, although it's a little bit different to the type of bug they are used to getting that way. We'll see what happens

nine

delaril · 01-20-2008, 12:04 AM

So they actually have a bug reporting system! That's good, at least. I haven't used the original firmware in a long time, so I've never had to check. For all you 6G folks' sakes, I hope Apple will release a fix promptly.

Barry · 01-20-2008, 01:36 AM

My memory may be faulty about this, but isn't there a 1.3 firmware update for the classic? If so, does this have he asme problem?

Luckyleo · 01-20-2008, 01:54 AM

Originally Posted by Barry

My memory may be faulty about this, but isn't there a 1.3 firmware update for the classic? If so, does this have he asme problem?

No. 1.1 is the newest. I'm downloading it as we speak

Barry · 01-20-2008, 01:58 AM

Ah. I was thinking of 1.03. Hope Apple fixes the glitch!

drummerboy47 · 01-20-2008, 02:17 AM

Great. I'm experiencing the noise too. Didn't notice it until updating to 1.1 from 1.0.3. I just sent Apple some feedback.

Does anybody know if this will drain the battery?

Will it damage my amp or my car setup if left connected?

Unimpressed.

Night Surfer · 01-20-2008, 04:59 AM

Just be thankful they didn't charge you $20 bux for it, I guess.