After reseting phantom4 battery and clearing PF flags, Battery Authentication Error

ayeshdulshan · Jan 2, 2024

Hi

Recently I was able to reset and remove PF flag on my phantom 4 battery (recharged battery that previously dead) and now its charging and also works with drone but cannot take off the drone(Shows Battery Authentication Error). Help!!

By the way, does anyone have eeprom for phantom 4 battery?

quaddamage · Jan 2, 2024

ayeshdulshan said:
I was able to reset and remove PF flag on my phantom 4 battery (recharged battery that previously dead) and now its charging and also works with drone but cannot take off the drone(Shows Battery Authentication Error)

Interesting. Did you do anything to the uC? Because uC does the auth.
Or maybe the uC asks the BMS for something before announcing "auth ok"?
Did you changed any keys?

ayeshdulshan said:
By the way, does anyone have eeprom for phantom 4 battery?

DJI Firmware update package contains uC firmware.

Other question that come to mind:

If you block battery communication to the drone, is the message different?
Is there an option to enable 3rd party batteries in the app or in assistant?

ayeshdulshan · Jan 2, 2024

All I did is clearing PF flag and reset the battery to default,
Also can you little bit more explain about uC firmware pls

ayeshdulshan · Jan 2, 2024

quaddamage said:
Interesting. Did you do anything to the uC? Because uC does the auth.
Or maybe the uC asks the BMS for something before announcing "auth ok"?
Did you changed any keys?

DJI Firmware update package contains uC firmware.

Other question that come to mind:

If you block battery communication to the drone, is the message different?
Is there an option to enable 3rd party batteries in the app or in assistant?

Also app doesn't have any enabling option to 3rd party batteries and also I clicked the authenticate button in dji battery killer software after done reseting (before resealed)