From what I read, factory mode is usually a corrupt efs partition. I'd say about 50% battery would suffice.
When you plug it in does it make any attempt to recognize it? Perhaps you need to install the USB drivers? Those can be found on Samsungs site.
When you plug it in does it make any attempt to recognize it? Perhaps you need to install the USB drivers? Those can be found on Samsungs site.
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