Basic Information: Printer Model: The printer I have is a stock Ender 3 S1 Pro, with klipper firmware using a raspberry pi hosting octoprint. MCU / Printerboard: ARM STM32F401 klippy.log (263.8 KB) serial.log (15.1 KB) Issue Description: When I start up my printer I get the following errors: …

"can not update mcu 'mcu' config as it is shutdown" experiencing errors on startup

Sineos March 15, 2023, 5:50am 2

Topic		Replies	Views
Please help (MCU (ADC pin) Error) General Discussion	6	6035	May 14, 2025
Random print fails - can not update MCU mcu as it is shutdown General Discussion	3	1364	May 4, 2024
Klipper state: Disconnect, Ready, Shutdown General Discussion	3	1025	March 6, 2024
Can not update MCU 'mcu' config as it is shutdown General Discussion	1	1906	August 16, 2024
Mcu.error: Can not update MCU 'mcu' config as it is shutdown General Discussion	7	178	August 3, 2025