Good day,

About three weeks ago, my (jailbroken) iPhone - which then still had firmware 1.1.4 - lost almost all its charge and "died". It looked impossible to get it charged, the red battery icon was the only thing it showed. Only thanks to a tip from another forum I managed to "revive" the phone: I left it connected to the wall charger for 9 hours, then switched it on simulating a DFU-restore.

I then did a complete re-install of the iPhone's software (did it twice just to be sure) upgrading / pwnaging it to 2.0 and subsequently to 2.01 which is on the phone now.

Starting last week, occasionally when I want to sync or to simply load the battery of my 2G iPhone (now with pwnaged firmware 2.01), my MacBook Pro answers with the message "A usb device is currently drawing too much power" and then disables the port. I eliminated the doubt it could be a hardware problem, using three different USB cables and four different Macs: the problem presents itself everywhere.
Interestingly, 2 out of 10 times I am successful when I connect the iPhone via USB to the MacBook, eg right now it is charging and I did a sync.

I think the two events are somewhat connected. Apple Phone support says the event is "strange" but since the phone occasionally works, it is impossible to get the phone changed.

I would appreciate any idea about this. Is this a hardware problem or a software or firmware thing? Or something else entirely?

Thanks very much!

Macs tend to give less power over USB than PC's, while that is not always true I would try and see if it gives the same error on a PC, or on a self-powered usb hub. It is possible that your phone is drawing slightly more than the 5V it requires.

Sounds like a broken battery in the iPhone.

I know this thread is dead and old but i have 2 of these that gave me the same error. Phone would boot over and over also. Replaced battery no good, replaced the battery board I used the original one on the new battery. I got the same thing. i have found the problem to be the DOCK. I repair phones and electronics. I inserted the dock ribbon from another phone from parts lying around plugged it into the wall and I get charging. I didnt before. I plugged it into itunes and bang phone is recognized and no annoying message that the usb device is drawing to much power. I hope this helps everyone as I found many sites with this issue and no solid answers as to why or how to fix it.