Updating to boot9strap v1.2

!!! This assumes you already have boot9strap 1.0 installed and are running Luma3DS as a .firm !!!
!!! If not, follow this guide to install 1.0 w/released SafeB9SInstaller https://3ds.guide/a9lh-to-b9s !!!

1) Keep your current Luma3DS build on SD/NAND, put this SafeB9SInstaller binary in SD:/luma/payloads like any other ->
https://twitter.com/SciresM/status/871498651364868096
2) Grab boot9strap v1.2 -> https://github.com/SciresM/boot9strap/releases/download/1.2/boot9strap-1.2.zip
3) put the .firm and .firm.sha in SD:/boot9strap (secret_sector not needed)
4) Hold Start when turning on the system to load Luma's chainloader, use the DPAD to select SafeB9SInstaller and hit A
5) Make sure all the checks pass, enter the keycombo, and let it install
6) After you press A, it will reboot and probably give you an ERROR, something something not enough argc, just power it off
7) All you need to do is update the Luma3DS binary from the latest version and it should boot again fine ->
https://github.com/AuroraWright/Luma3DS/releases/download/v8.0/Luma3DSv8.0.7z