this is a mirror + tutorial. i will try to credit as much as possible.

extracted files + roms

unlocking bootloader

install usb drivers https://mtkdriver.com/

first install python3 (plenty of vids)

install git

commands to run:

git clone https://github.com/bkerler/mtkclient
cd mtkclient
pip -r install requirements.txt
git clone https://github.com/coloredmarble/redmi_9a_mtkclient
cp redmi_9a_mtkclient/* .
# power off phone. press volump up and volume down at same time. connect phone to usb cable
py mtk da seccfg unlock --preload preloader_k62v1_64_bsp.bin --loader n.bin

for me it took like 5 hours to figure this shit out. worth it

roms

Arrow OS available in releases. flash firmware instad of miui from files