I've been putting off updating my Switch (it's on 10.2 with AMS 15 using emunand) but finally want to update. So I have a few questions:
1. From what I understand, I should update atmosphere, then hekate (in this order). The update process is essentially just merging new files/folder with the existing ones. Does it matter if I just back up my old files/folders, then delete them on my SD card, and extract fresh copies from the updates?
2. When updating the actual firmware itself, it is recommended that I make a BOOT0/1 eMMC backup. That part seems simple. After this, I should be updating my sysMMC first. So my question is: do I update sysMMC by booting the existing stock firmware (i.e. retail mode with no payloads) and then update the firmware? The reason I ask is that I vaguely remember hekate having non-EmuMMC boot options, making me wonder if these are the ones I should be booting instead.