Battery level shows empty, But measured at 4v.
 

Hi guys , I have this Stupid mp4 AK2025. Shows empty battery and then it auto shutdown itself.

I have tested the battery with a multimeter and it's overcharged at 4v. 3.7v is writteng in the battery "bag"

Any way of avoiding auto shutdown even if it shows empty? should I start playing with the firmware? (I'm a C programmer)

Thanks!!