Just want to check a couple of thing be for I go all out CFW 
1) I have a switch that is in the probably patched category, will using a rcm jig if it is patched do anything to the switch?
My other switch is unpatched and I’m going to setup an offline emunand on my sd card and use the sysnand to go online and access the eshop.
2) Do I need to remove my sd card containing the emunand before I boot into OFW?
3) Can someone explain to me about fuses?
4) I want to update my patched switch‘s official firmware. I assume I just boot into OFW and use system update.
5) HeKate allows you also to boot into OFW, why would you use this.
6) Can you do system update without linking your user name?
Thanks guys

1) I have a switch that is in the probably patched category, will using a rcm jig if it is patched do anything to the switch?
My other switch is unpatched and I’m going to setup an offline emunand on my sd card and use the sysnand to go online and access the eshop.
2) Do I need to remove my sd card containing the emunand before I boot into OFW?
3) Can someone explain to me about fuses?
4) I want to update my patched switch‘s official firmware. I assume I just boot into OFW and use system update.
5) HeKate allows you also to boot into OFW, why would you use this.
6) Can you do system update without linking your user name?
Thanks guys