AMS for firmware 20.3.0
here.
Hekate for firmware 20.3.0
here.
Modded AMS (fusee.bin) for firmware 20.3.0 that allows the use of sigpatches (not yet available).
Sigpatches for firmware 20.3.0
here.
Sys-patch for firmware 20.3.0
here.
Lockpick RCM for firmware 20.3.0
here.
Mission Control for firmware 20.3.0
here.
Instructions on how to migrate from sigpatches to sys-patch
here (read three messages).
Instructions on how to modify hekate_ipl.ini for the new version of Hekate
here.
Ultimate guide by impeeza on how to update your firmware/Atmosphère
here.
thank you
@impeeza and
@Blythe93!
PD: As soon as someone tells me where to find the modded fusee.bin file for using sigpatches under firmware 20.3.0, I'll update this message. In the meantime, I recommend booting with hekate, or even better, migrating from sigpatches to sys-patch.