Is there 'upload finish' message while you upgrade firmware and reset default program?
Besides, have you turned the beep off before while upgrade firmware and reset default program?
If still the same issue, change the computer have a try
or you may refer to the last post in this link have a check.
For battery: according to our test and research, it is suggested to use Alkaline battery with good quality like Energizer, DURACELL or rechargeable nickel-metal hydride or nickel-cadmium, rechargeable Li-ion battery which can be bought from amazon or local shop.