Thread: Boot Issue N900
View Single Post
pichlo's Avatar
Posts: 6,445 | Thanked: 20,981 times | Joined on Sep 2012 @ UK
#16
Originally Posted by Diehardn900 View Post
I dont think this is an issue but I did a battery bypass by soldering +/- wires to the phone where the battery connects so its get power by a usb cable. Assuming the eMMC doesn't need power to keep storage.
Sorry, you did what? I am not 100% sure I understand. Do you mean you soldered the USB power directly to the battery terminals? That would be a sure way of frying your phone (the battery voltage is about 4.2V max; USB gives 5V). I hope this is not what you meant.

The N900 needs the battery to boot. It can be replaced with a dummy circuitry but it is not as simple as just the +/- wires, even with the correct voltage. The middle terminal is also important. The phone uses it to check the battery capacity.

The eMMC is non-volatile and does not need a power backup any more than any other flash storage.
__________________
Русский военный корабль, иди нахуй!
 

The Following 4 Users Say Thank You to pichlo For This Useful Post: