Hacking new 3ds black screen after swap mother board

kitsunezero_ · Mar 16, 2026

Hi, I need help with my New 3DS (EUR region).

I replaced the motherboard and now the console boots into Luma3DS config menu but then goes to a black screen after pressing START.

What I have done so far:
- B9S + Luma3DS installed and working
- GodMode9 accessible by holding START on boot
- Performed CTRTransfer with 11.15.0-47E EUR (n3ds) file
- Tried installing FIRM partitions from GodMode9
- Updated boot.firm to latest Luma3DS version
- Console shows black screen with or without SD card

The console boots B9S and loads Luma config fine, but after pressing START it just goes black. The power LED and WiFi LED both turn on, but both screens remain completely black. GodMode9 and Hourglass9 work correctly.

Any help would be appreciated, thanks!

kitsunezero_ · Mar 16, 2026

Latest ctrcheck.gm9 results:
- NAND header is stock (n3DS)
- Warning: leftovers from a9lh stage2 payload
- LFCS still invalid after recovery attempt
- Serial does not match SecureInfo
- b9s v1.4 installed to firm0 and firm1
- Nintendo 3DS folder exists but has no data
- Critical: NVRAM is inaccessible
- HWCAL0 and HWCAL1 are now valid (was fixed by restoring from Luma backups)

What I have already tried:
- CTRTransfer with 11.15.0-47E EUR (n3ds)
- Restored HWCAL0.dat and HWCAL1.dat from Luma backups (now fixed)
- Updated boot.firm to latest Luma3DS version
- Reinstalled FIRM partitions from GodMode9
- nvram.bin does not exist in SysNAND Virtual
- Black screen happens with and without SD card

GodMode9 and Hourglass9 both work correctly. The only remaining critical issue is NVRAM inaccessible after a motherboard swap. Any help would be appreciated!

fakeriscalling1111 · Apr 21, 2026

Man i have had the exact same issue for the past 2 months. Have you found a solution to it? Would be really helpful thanks

Hacking new 3ds black screen after swap mother board

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