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Оригинальный сообщение: jessabethany ,


If a new battery and charge port doesn’t improve the situation, then your next ‘most likely’ fault would be damage to the tristar usb recognition chip which can cause these symptoms.  Changing tristar is not a DIY job, but can readily be done by any competent microsolderer.   If not tristar, then it can be failure or corruption of the flash memory chip.