Failed to apply emummc. Failed to launch HOS.

[suchy101]

Hello.

I have an OLED Switch, modded ages ago with V3 modchip running latest HW Fly firnware, Switch on OS 17.0.1, using HATS pack, also latest. I keep it up to day on all counts. Never have any issues with it.

Had this up and running, installed a whole bunch of games and left the Switch in the dock, powered off. I never used dock previously, its a new addition in my routine.

Tried to start it after about 3 weeks sitting in the dock and it wont boot into emummc showing two errors:

Failed to apply emummc.
Failed to launch HOS.

Naturally the question is "how to fix this", but after doing some research and experiencing something similar previously, I suspect options are very limited.

1. Is there a way to repair the broken emu nand
2. I actualy have two SD cards. The second insall works fine. Can I use that somehow to restore the broken one? I tried copying over some stuff and I cannot find a way to rebuild the installed games database, or at least show what was installed on it ...

Appreciate any and all help.

Thank you in advance.

 

[J0hnD03]

You need a clean NAND Backup and your Prodkey.info files. If you don't have them you can say bye-bye to online play.

 

[suchy101]

yeah, did not backup anything. and I am not using this one for online at all.

Please talk to me like almost complete noob, which I am. I dont even know what Prodinfo.keys are ...

So, without the actual backup, there is no way to un-Fk it ?