[link|https://www.ifixit.com/User/4623088/Hafiyyy|@hafiyyy|new_window=true] bricking, unbricking, flashing ROM etc. is really not what we do here. We are more the hardware crowd vs. the software kind. Specifically, something like what you will require gets a little lengthy and can get pretty convoluted. I would suggest you check with the forums that are into the firmware/software aspect of this. Check places [https://xdaforums.com/t/guide-how-to-unbrick-redmi-9c-by-flashing-with-sp-tools-without-auth-file-tested-working.4357311/|like this] or the one [https://www.bing.com/ck/a?!&&p=e142e51f58e8c504b6a5283d9b977ee201f0bec8447a16aaafd09a5fb30599ffJmltdHM9MTczMzg3NTIwMA&ptn=3&ver=2&hsh=4&fclid=3621952c-40de-616e-27d7-807c410b6026&psq=unbrick+Xiaomi+Redmi+9C&u=a1aHR0cHM6Ly93d3cuZ2V0ZHJvaWR0aXBzLmNvbS91bmJyaWNrLXhpYW9taS1kZXZpY2Uv&ntb=1|on here]