Firewire?Probably is one of the older chargers that use firewall to charge your ipod. Newer ipods no longer support firewall. Buy a new charger. There are firewalls to usb adapters, but they probably cost as much as a new charger. Or use the adapter that came with your touch, that should charge both your nano and touch.
Are you sure it's USB? The firewire wall chargers look exactly like an USB wall charger. If it charges your nano but doesn't charge your touch, it has to be a firewire charger -- as far as I know, that's the only difference between the older and newer ipods as far as charging behavior is concerned.I'm guessing that a "firewire" charger has a firewire output that requires a USB adapter.
My charger in this case is a USB charger. I'm not completely averse to buying a new one if I have to. It's just that I know this charger is not broken. Clearly they have changed something in the new ipod touch or I'm not understanding something?
Thank you! That was a most informative post.It is a known issue that the ipods won´t charge with all chargers.
It is true that new generations do not charge with firewire.
But even with USB it is not so easy.
USB uses 4 conductors: ground, power and two data.
Most USB devices just ignore the data connectors when charging and so do the chargers.
The ipod doesn't. First it tries to establish a connection with a kind of Handshake.
If it gets an answer, it charges.
If not, it checks the voltage on the data pins. If it sees about 2.1 V and 2.4 V in those pins it will charge, otherwise won't.
At least this was like this with the Ipod touch 1.G and nanos 2G. I suppose it is the same with the newest ones.
Some chargers put this voltages on the data pins, some others don't.
If you have fun doing things by yourself (instead of spending 10$ for another charger) you could try this workaround: