Yes, it's completely safe to update. Just update normally through System Settings.Hey! In on Sys 11.4.0-37U using arm9l on luma is it safe to update to the newer firmware without losing my custom firmware? How do I do this?

Yes you can do it without losing anythingHey! In on Sys 11.4.0-37U using arm9l on luma is it safe to update to the newer firmware without losing my custom firmware? How do I do this?