Try removing the battery and wait one minute before reinstalling it.Some setting parameters are written into NVRAM (SRAM). For some reason, parameters in the NVRAM may be changed, which can cause abnormal startup or failure to load games or other faults.The battery discharge method is usually used as a debugging method to clear abnormal NVRAM and restore the loading of default parameters.It's just like when a computer motherboard's BIOS is modified and cannot restart, requiring the battery to be removed for discharge.
If the above can solve the problem, it indicates a soft fault in the NVRAM that can be restored.
However, it is also possible that an error occurred during the erasing and programming procedure, causing the system to freeze and it will never reach the completion of the progress bar. As a result, the user forces a shutdown.Once this happens, the entire BIOS of the flashcart has been corrupted, leading to partial functionality failure or even completely bricking the device.