Change the ADC voltage divider resistor (marked with a blue dot) to to resolve 10V/12V measurement errors .
: The MC34063AG converter often has resistors with values that are too high, limiting current too early. Ideal Value : 0.22 Ohm . iprog rework
If your device is failing self-tests or showing port errors, follow these common component replacements based on community repair guides : Change the ADC voltage divider resistor (marked with
stm32flash -w firmware.bin -v -g 0x08000000 /dev/ttyUSB0 iprog rework