This is the most common method for bricked or stuck boxes using the logic, but done via SD card.
If your box boots up and you just want to update:
If you download a file named MXQ_Pro_11.zip , unzip it. If you see a file named AML or update.img , it is likely Amlogic. If the file is massive (800MB - 1.5GB), it is a full system image.
In the end, John learned a valuable lesson about the risks of downloading firmware from unverified sources. He ended up wiping the device clean and reinstalling the original firmware, which, although outdated, provided a more stable experience.
The thrill of the hunt for the perfect firmware!