Hacking How to update sysNAND to 9.0-9.2 from custom server?

[Retr0Capez]

Hi. I heard you could update your sysNAND to 9.0-9.2 from a custom server, and I was wondering the way to do this. I recently got emuNAND threw rxTools, and I can delete emuNAND and install it again if I need to. The reason I want to update to 9.0-9.2 is because of the spider exploit, and my emuNAND is at 9.7.