Hi, thanks for your answer, yes, I had already tried several times to download the firmware with the Magic Lantern link, unfortunately doesn't work. It seems that the file no longer exists, I will look for it elsewhere. About the info on downgrading the firmware version to install Magic Lantern it helped me a lot, thanks!
All this leads me to a new question; after installing Magic Lantern, can the firmware be updated again?
thanks in advance