Hacking [please help, somebody? ...anybody?] very strange case of home menu brick

[Elveman]

Well, here we go again. This is the third time I've encountered something like that throughout my communication with another 3DS users. The symptoms are straightforward: the console boots into black screen with accessible safe mode. Here's the twist though: the Sleep Mode menu is accessible as well but if HOME button is pressed (to return to home menu), console freezes.

Here's some facts:

1. It is not related to CFW (I've encountered this on clean unmodified console once).
2. It is not related to Theme cache (tried to boot console without SD card, no results).
3. It cannot be fixed by CTRNAND transfer (that pretty much means this -> https://gbatemp.net/threads/how-to-...ckup-file-with-b9s-sighax-and-hardmod.471919/ does not help at all)
4. Installing B9S does not fix this issue (tried this with the console that had A9LH installed, no luck)
5. Safe mode update does not help.

However (and big one), on 3DS with B9S and Luma3DS installed, we've managed to get this ErrDisp:

So, is anyone here able do decipher this one? If so, what should we do to rescue this guy?
Please, GBATemp, I trust in you

UPDATE:
So this errcode basically deciphers to
Level: permanent
Summary: Wrong argument
Module: FS
Description: RomFS/Savedata hash-check failed? (fs)
Counting that this error remains even after CTRTRANSFER, is it related to any system saves?

UPDATE: we found the solution - you need to delete Config savedata. This reinitializes the system. I'll add tutorial later

 

[lisreal2401]

My best guess is some sort of hardware issue. It definitely can't be software side with all that tried. I'd assume broken Wifi/NFC/Gamecard initialization.

 

[PabloMK7]

Someone needs to parse the error code 0xd900458b
I can't do it myself from my phone because C compilers won't allow me to paste the code (it gets pasted into the console output inself) :/
Anyway, @Nanquitas may be able to do it.

 

[Elveman]

My best guess is some sort of hardware issue. It definitely can't be software side with all that tried. I'd assume broken Wifi/NFC/Gamecard initialization.

Well, it's not a N3DS, and safe mode is able to connect to the Internet. This leaves only the gamecard. Still, there are possibilities that maybe it's something else (and they are related to the errcode). Still, I wonder if there are any means to bypass this break (so the Gamecard, for example, doesn't initialize, but home menu continues to work)...

 

[Nanquitas]

Here's the error parsed:

sh-4.2$ main D900458B                                                                                                                                                                                                 
Code: D900458B                                                                                                                                                                                                       
State: FAILED                                                                                                                                                                                                         
Level: 27                                                                                                                                                                                                             
Summary:8                                                                                                                                                                                                             
Module: 17                                                                                                                                                                                                           
Description: 395

See here if you can find something helpful for you.

 

[lisreal2401]

Does CTRNAND overwrite FIRM0? Maybe that's corrupted? If a clean home menu isn't booting something is definitely fucky, but I'm really convinced something has gone wrong with the HW - I'm not the best person to ask about this to be fair. Have you tried ignoring errors from ARM11 in luma?

 

[Elveman]

Here's the error parsed:

sh-4.2$ main D900458B                                                                                                                                                                                              
Code: D900458B                                                                                                                                                                                                    
State: FAILED                                                                                                                                                                                                      
Level: 27                                                                                                                                                                                                          
Summary:8                                                                                                                                                                                                          
Module: 17                                                                                                                                                                                                        
Description: 395

See here if you can find something helpful for you.

Basically deciphers to
Level: permanent
Summary: Wrong argument
Module: FS
Description: RomFS/Savedata hash-check failed? (fs)

Big thanks!
Now to think where to go from here...

Can it be something like gamecoin.dat brick where corrupted file leads to svcBreak or this is something else?

--------------------- MERGED ---------------------------

Oh, so maybe it's related to Home Menu NAND Savedata (Launcher.dat), but I don't know for sure. Is it possible to regenerate it somehow?

 

[lisreal2401]

Basically deciphers to
Level: permanent
Summary: Wrong argument
Module: FS
Description: RomFS/Savedata hash-check failed? (fs)

Big thanks!
Now to think where to go from here...

Can it be something like gamecoin.dat brick where corrupted file leads to svcBreak or this is something else?

--------------------- MERGED ---------------------------

Oh, so maybe it's related to Home Menu NAND Savedata (Launcher.dat), but I don't know for sure. Is it possible to regenerate it somehow?

You can replace it from another NAND, but I read about it too and I'm thinking the NAND itself might be fucked? You said CTRNAND transfers weren't working so with that logic you've already attempted what you want to try.

 

[Elveman]

You can replace it from another NAND, but I read about it too and I'm thinking the NAND itself might be fucked? You said CTRNAND transfers weren't working so with that logic you've already attempted what you want to try.

Does CTRNAND transfer replace all system saves? I guess not since if it did, friendsave.bin would be the same for many people (and they would just have the same friend code, would they not?)

...or I'm just dumb and friendsave.bin auto-generates every time if it doesn't exist. I don't know for sure

 

[PabloMK7]

Looks like the home menu savedata is corrupted. Do you have GodMode9? You have to use it to remove a certain file: CTRNAND:/data/(randomnumbers)/sysdata/00000098 (or 00009802, not sure).
That will reset the home menu save data and hopefully fix your brick. (You will lose the icon arrangement, some home menu settings, but not any game/save)

 

[Elveman]

Looks like the home menu savedata is corrupted. Do you have GodMode9? You have to use it to remove a certain file: CTRNAND:/data/(randomnumbers)/sysdata/00000098 (or 00009802, not sure).
That will reset the home menu save data and hopefully fix your brick. (You will lose the icon arrangement, some home menu settings, but not any game/save)

Yes, I do. Thanks, I'll try tomorrow and report the results. Hopefully this is going to be helpful to anyone encountering this problem

 

[Elveman]

Looks like the home menu savedata is corrupted. Do you have GodMode9? You have to use it to remove a certain file: CTRNAND:/data/(randomnumbers)/sysdata/00000098 (or 00009802, not sure).
That will reset the home menu save data and hopefully fix your brick. (You will lose the icon arrangement, some home menu settings, but not any game/save)

Ok, update here: deleting Home Menu savegame (00020098) regenerated this file but didn't fix the problem, BUT we tested deleting different save files and it seems that deleting Config savedata (00010017) reinitialized the system and fixed this brick! Thanks everyone, I'll update the OP

 

[kioolopo09]

For when the tutorial is that I have the same problem

 

[takatophilip]

For when the tutorial is that I have the same problem

my friend got this and i asked him to delete the exact same folder that is in the OP and it works.
just enter godmode9 and go to 1:/data/(random number)/sysdata/ and delete the '000100017' folder. then proceed to reboot the 3ds. hope that helps

 

[caluml]

Hi I have a similar problem to this but it happens when im playing my game it will just randomly crash and on the bottom screen an error would pop up I have pictures to show the problem so should I post them here or start a new thread I really need help with this please

 

[GentleHoovy]

Hi, had a similar problem so deleted the file mentioned (00010017). 3DS is just simply blackscreening on boot now