ESP32 won't Boot after pulling GPIO12 up in program

[Itz_arnold]

I set gpio12 as input_pullup and uploaded my code. But my board refused to connect to wifi and will not accept new code. Keeps saying fatal error occured: invalid head of packet . Hep pls am a newbie

[ESP_Sprite]

Please post more info: what hardware are you using, how did you connect it, what software are you using and what OS is running it. If any, unless you're messing with eFuses (and you'd know that if you were), there's very little a program can do to stop download mode from working, and what you say you did wouldn't break it.

[chegewara]

From your question we can assume you are having connected some device or peripheral to pin GPIO 12.
This is important that you should read then:
https://github.com/espressif/esptool/wi ... -Selection