Battery method doesnt work (for flashing firmware)

I’m wiping chromeos off my laptop and one of the steps for my laptop type (SNAPPY, HP Chromebook 14 G5) is disconnecting the battery. The other method is SuzyQ, but i dont wanna do that. I disconnected the battery and plugged in a charger, but from there it would just have a black screen and flash the “os verrification is off” for a few seconds. Not sure what’s wrong :confused: