Security Error (Samsung Galaxy Tab A7 10.4 Wifi)

@kevin7711,
it is impossible to install /e/OS-T with this firmware 500XXS7CXB1! See my experience here

On the other hand, installing with LineageOS 21.0, LineageOS21.0-for-microG and iodéOS 5.1 works perfectly. These three CustomROMs are based on AOSP 14 (Android 14 'U’pside Down Cake)