First of all, nice job buddy and thanks for the contribution!
I was wondering if you could tell us a few things about how did you get started in emulation and maybe provide us with some tips...thank you in advance.
Took me a few days to find time to try this and finally did it.
I followed Canna's tutorial Backup/Restore your Nand + Get your biskeys+tseckeys+keys and then updated to 5.1.0 without burning fuse, everything works perfectly now.
Thanks for your answer, I think my Switch's first two numbers are 5.0, I don't remember the last digit...could be the reason why sleep mode won't work. Is there a way to update without going online?
The Vita is not dead only thanks to the homebrew community. I think $ony failed the Vita due to the stupid memory stick's prices, they are ridiculously expensive.
Also, make sure you read the tutorial a few times before actually doing everything with the 3DS, it helps to familiarize with the steps and will reduce the chances of screwing up :)