Hey, everyone! It's been a while!
I never went online with my console, and have a couple of questions related to the registration process for Nintendo Switch Online (NSO).
As you may know, Twitch Prime is offering a 1-year subscription to NSO, and the deal expires tomorrow (September 24). Since I'm already signed up for Amazon Prime, I wanted to benefit from that promotion.
My Switch is a launch model that's still running firmware 1.0.0 on its SysNAND/OFW. I use SX OS, and the device is currently running 6.2.0 on the EmuNAND/CFW. A proper, clean backup was made before ever installing SX OS and updating the console (using ChoiDuJourNX, as to not burn any fuses).
The registration process for NSO must be completed on the Switch itself, using the eShop. From what I understand, to use the eShop, you need to be on the latest firmware, is that correct?
So, is there any way to update the SysNAND/OFW without burning any fuses? And, if so, would I be able to downgrade back to 1.0.0 later?
The idea is to go online without any risks (on SysNAND/OFW) and be able to run the eShop, as to complete the NSO registration process and have access to the NES and SNES games available, while still leaving the option open to revert to 1.0.0.