Hacking help with downgrading my emummc 22.0.0

[LuigiGad]

Hello everyone, I am encountering enormous problems in downgrading my emummc 22.0.0 to a previous version like 21.2.0.
My starting situation is as follows:
Mariko (classic model)
Stock 22.0.0
hekate 22.0.0
atmosphere (unofficial 22.0.0)
Creating an emummc from hekate everything works.
Both full stock 22.0.0 and emummc 22.0.0
At the moment when I try to perform the downgrade using even various automated tools (nandfix pro LV1 / Vampitech Downgrade), but also doing the manual downgrade and using Tegra explorer, I get the following results after the downgrade:
First boot, Atmosphere logo --> joycon logo --> Crash (see attached photo)
Second boot, Atmosphere logo--> black screen.
I ask for advice from more experienced users where I am going wrong. (P.S. I don't have warmboot issues precisely because of the version of Atmosphere compatible with 22.0.0)

 

[thesjaakspoiler]

Try a clean install with Hekate/Atmosphere without any themes, overlays, custom modules.
Custom modules and themes are the usual suspects.

 

[LuigiGad]

I solved it on my own, understanding well why I was having problems. Basically, the various tools, both the Vampitech downgrader and NandFixPro, correctly did their job, but only on firmware 20.5.0. If used with 21.2.0, I get an unrecoverable crash. Once I went back to 20.5.0 with Daybreak, I successfully went to 21.2.0. The thread can be closed as far as I'm concerned. A special thanks to the only person who intervened and to everyone else.