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Hacking Switch no longer reads cartridge games

Dekopon - (Mostly) Fullspeed 3DS Emulation on Nintendo Switch

PalindromicBreadLoaf · 2026-07-16T19:11:42+00:00

Credit goes to StickyMangoRice for the logo. Dekopon is a port of Azahar to the Nintendo Switch. The current release is version 2.0.0. Performance is very title dependent, and will be improved with time, but many games can be played fullspeed right now, sometimes even with stock handheld clocks. (I do recommend at least bumping the CPU up to dev unit clocks in handheld just to reduce shader compilation stutter and smooth out some rough frame pacing.) Depending on the game, you can get up to 4x resolution scaling at full speed in docked/handheld charging (although really 3x is all you need in handheld). If you want to try any new3ds exclusive games, they won't run well. All four of the 3DS' cores run on a single emulation thread, so we're at a 1.2GHz difference (2GHz single core where as the 4 3DS cores each run at 804MHz) from what we would need (and architecture changes from 3DS to Switch cannot account for that much raw clock speed loss). The solution would be to split the emulation threads on new3DS games, but that's a ton of work for very very little gain. See here for a full compatibility chart: Dekopon Compatibility Chart Feel free to share your own compatibility findings here and I'll update the sheet accordingly. Also share any issues you have and I'll do my best to fix them. Downloads can be found here: Releases Along with the source code here: Source ROMs default location is /switch/dekopon/roms/ All formats that Azahar natively supports are supported here too. Different screen layouts can be cycled through via pressing the right stick. Pressing '+' on a game shows information about it, including updates and dlc. Enjoy! Also if someone wants to make a better UI for this I wouldn't be offended. I can't make a good UI to save my life, but the one included at least kinda functions to get you into a game.

Thread starter EmiElFeroz
Start date Jan 22, 2020
Views 1,616
Replies 5

EmiElFeroz

Member

Newcomer

Level 1

Jan 22, 2020

After updating from firmware 9.0.0 to 9.1.0 with the newest kosmos and atmosphere (with sigpatches) my switch no longer reads cartridge games, even tho I also rebooted it to the sysnand without auto-rcm, what else can I do?

Iamapirate

Well-Known Member

Member

Level 4

Jan 22, 2020

locate BCT.ini on your SD and add nogc = 0 and save.

Reactions: ELY_M

Resaec

Well-Known Member

Member

Level 6

Jan 22, 2020

Please also tell him that this will result in a GC reader firmware update that will prevent him from using the GC reader on a lower system firmware.

EmiElFeroz

Member

Newcomer

Level 1

Jan 23, 2020

I've done that and it still doesn't work tho

Gamerjin

No emulator code questions

Member

GBAtemp Patron

Level 19

Jan 23, 2020

does it give an error code?

EmiElFeroz

Member

Newcomer

Level 1

Jan 23, 2020

No, it just says to remove the game card and reinsert it, also to check the gamecarderror page

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Also I've tried with adding nogc=0 and nogc=1 but neither worked

UPDATE: After setting autonogc off from the hekate menu it worked again, thanks for the attention.

Last edited by EmiElFeroz, Jan 23, 2020

Reactions: ELY_M