so if im right
when you normally upgraded to 9.0.0 you burned your fuse, so its normal after downgrading to 8.1.0 you can only launch it in RCM since it bypass fusecount, to be able to boot it again without rcm you need to get it back to 9.0.0
I was unable to add games from xci or nsp for some reason due too all the errors
it could be because you are in stock atmosphere CFW and you dont have the sigpatchs
for the error screen you linked when you try to boot in cfw : what are your version of hekate/athmosphere? are they the last available?
if not i had this screen with the previous atmosphere when i had a cardridge into the slot
so either dont put anything into the gamecard slot or update atmosphere if it isnt up to date
https://github.com/Atmosphere-NX/Atmosphere/releases
https://github.com/CTCaer/hekate/releases
A/ damage assesment :
1/ did you do a backup of boot0, boot1 and rawnand.bin of your switch with hekate in 9.0.0 firmware before downgrading?
- if yes : go to
2/
- if no : go to
B/
2/ did you put your switch offline (airplane mode) before doing anything cfw and never have been online since then?
- if yes go to
3/
- if no go to
B/
3/ is the backup you said you made in 1/ have been done before doing anything hacky? (did you made it before booting into atmosphere and trying to install game and stuff?) and have your switch in CFW have always been offline
- if yes you are in the best scenario go to
C/
- if no go to
B/
B/ you can only "repare" the damages, there is a chance that you will be banned if you connected online with cfw but we will try to not make things worse:
- you will need to go back into cfw and update manually:
a. update atmosphere (0.9.4) and hekate (5.0.2) with the link up there
b. take the files to update to 9.0.0 with choixdujour
c. boot into atmosphere
d. update to 9.0.0
e. once its updated back into 9.0.0 go into ofw and go to
D/
C/ put the backup (the 3 files : boot0, boot1 and rawnand.bin) into the folder sd:/backup/restore and restore it with hekate
once you are done go to
D/
D/ whats next
check if you are banned, if you are just hack it on the go, if you arent follow the next steps:
- boot your switch into ofw, erase all wifi connection and put it in airplane mode
- then use this tutoriel to setup and emunand (choose the "emuNAND CFW (Recommanded)" option when they ask you to choose)
: https://nh-server.github.io/switch-guide/
an emunand is a copy of the sysnand (the original memory of the switch) that is located on the SD card
the idea is :
- keep your sysnand not hacked to play online to the game you own
- do cfw things into emunand while having it offline, never ever put it online or you will get banned (especially if you install nsp/xci)
the tutorial linked before will explain everything, read carefully
emunand and emummc are the same thing (to make it simple), in the switch the those words are used for the same thing
ps: in the "no" situation for A/ 2/ and 3/ i avoided making him restore a nand backup (dirty or not) if he have been online after having made said backup is because i heard that sent telemetry mismatching is pretty bad ban-flagging wise