Hacking Switch Oled CFW on SysNAND, able to restore?

[sirzechs753]

Hi, so recently my friend bought a used oled switch, the seller said it's not banned and able to use OFW and CFW (also the seller lost the clean sysNand backup).
After he brought the switch to me and I checked it. the CFW is installed on SysNAND, it has 3 launch option on hekate (4mosphere, 4mosphere (safe-mode), Stock (semi-stock)).
- I checked to go inside 4mosphere the serial there is cleared to 00000 and has some pirated game and tinfoil.
- checked inside the Stock (semi-stock) the serial there is not cleared and still show the actual serial number and also having same game tiles like the other launch boot.

now I'm in the doubt whether the switch is already banned or no and I didn't dare to connect to wifi and open nintendo eshop or any legit usage to confirm whether it's banned or no.
Question is, is there any way I can do to clean the SysNAND to stock again and hopefully able to go online and not banned?. idk I've read some methods like Haku33 or someone even said rebuild stock SysNAND if still have the original PRODINFO. but I'm not sure which are the best case for me

 

[Hayato213]

Without an emunand, no NAND backup and CFW on Sysnand so obviously it is not cleaned, OLED burnt fuse when updated.

 

[sirzechs753]

Without an emunand, no NAND backup and CFW on Sysnand so obviously it is not cleaned, OLED burnt fuse when updated.

so even if I have NAND backup, practically I cannot restore the sysNAND with any backup lower than my current sysNAND firmware due to the burnt fuse?. this is new for me, never had OLED before.
sorry if I didn't get your point, but back to question is there any chance I can get my sysNAND as clean as possible?, I really do wish to make the sysNAND clean and use emuNAND onwards, I probably can just clone the current state sysNAND to emuNAND but having a clean sysNAND then I back it up really giving the feel of assurance

 

[Hayato213]

so even if I have NAND backup, practically I cannot restore the sysNAND with any backup lower than my current sysNAND firmware due to the burnt fuse?. this is new for me, never had OLED before.
sorry if I didn't get your point, but back to question is there any chance I can get my sysNAND as clean as possible?, I really do wish to make the sysNAND clean and use emuNAND onwards, I probably can just clone the current state sysNAND to emuNAND but having a clean sysNAND then I back it up really giving the feel of assurance

It has to do with fuse count, when you update the sysnand firmware on an OLED or V2 Switch then fuse get burn, you can preserve fuse with autoRCM but that is only available on V1 unpatch switch. If there is installed NSP on sysnand then it is no longer clean, no point of cleaning it, just use it as it is. Haku33 doesn't clean it, and rebuilded NAND can't go online so kinda pointless.

 

[browntigerz]

It has to do with fuse count, when you update the sysnand firmware on an OLED or V2 Switch then fuse get burn, you can preserve fuse with autoRCM but that is only available on V1 unpatch switch. If there is installed NSP on sysnand then it is no longer clean, no point of cleaning it, just use it as it is. Haku33 doesn't clean it, and rebuilded NAND can't go online so kinda pointless.

Out of curiosity, if i made a sysnand backup before creating an emummc, and now i upgraded my firmware to the latest on ofw. Will the backup of sysnand still be useful or do i need to create a new backup everytime i upgrade firmware?

 

[Hayato213]

Out of curiosity, if i made a sysnand backup before creating an emummc, and now i upgraded my firmware to the latest on ofw. Will the backup of sysnand still be useful or do i need to create a new backup everytime i upgrade firmware?

Depends on your model, if you got an unpatched switch you can take advantage of fuse count with autoRCM.

 

[browntigerz]

Depends on your model, if you got an unpatched switch you can take advantage of fuse count with autoRCM.

I have the oled model, so safe to assume the old backup is now useless?

 

[Hayato213]

I have the oled model, so safe to assume the old backup is now useless?

Yes if you updated sysnand/ofw firmware as it burn fuse on update.

 

[browntigerz]

Yes if you updated sysnand/ofw firmware as it burn fuse on update.

So does that mean i should make a backup every time i do an ofw update or is it not worth it once i already setup emummc

 

[Hayato213]

So does that mean i should make a backup every time i do an ofw update or is it not worth it once i already setup emummc

I will base it on the fuse count on the fuse count table in the link, firmware 20.0.0 to 20.2.0 have 21 and and 19.0.0 and 19.0.1 have 20, if you restore firmware 19.0.0 on fuse count 21 it won't boot ofw. Hekate also have the option to backup emummc nand backup you can do that if you want. I usually do a backup when I update my sysnand CFW oled so it is most up to date.

 

[sudeki300]

Hi, so recently my friend bought a used oled switch, the seller said it's not banned and able to use OFW and CFW (also the seller lost the clean sysNand backup).
After he brought the switch to me and I checked it. the CFW is installed on SysNAND, it has 3 launch option on hekate (4mosphere, 4mosphere (safe-mode), Stock (semi-stock)).
- I checked to go inside 4mosphere the serial there is cleared to 00000 and has some pirated game and tinfoil.
- checked inside the Stock (semi-stock) the serial there is not cleared and still show the actual serial number and also having same game tiles like the other launch boot.

now I'm in the doubt whether the switch is already banned or no and I didn't dare to connect to wifi and open nintendo eshop or any legit usage to confirm whether it's banned or no.
Question is, is there any way I can do to clean the SysNAND to stock again and hopefully able to go online and not banned?. idk I've read some methods like Haku33 or someone even said rebuild stock SysNAND if still have the original PRODINFO. but I'm not sure which are the best case for me

the sysnand is already dirty, if it's already not banned it will be once it connects to nintendo's servers, just update and create an emunand then run things from there. its still worth having an emunand even if you don't plan to go online.

 

[Nephiel]

So does that mean i should make a backup every time i do an ofw update or is it not worth it once i already setup emummc

Apart from the eFuses, whenever you go online with a clean sysNAND, telemetry logs could be sent to N servers. If you then go and restore an earlier backup of that sysNAND, the next time it goes online, it may result in a ban, because the logs on the N servers are more recent and no longer match those on your sysNAND.

tl;dr: once a sysNAND has been dirtied, unless you have a backup of the same sysNAND, taken when it was still clean, but after the last time it was online, it can't be restored to a clean state. Most people don't bother and just use an emuNAND instead.

 

[l7777]

The simple answer is that you have a modded OLED Switch. Assume it is banned and enjoy what you have. If you want to play online you'll need a different Switch.

 

[Xyphoseos]

What is the diference between : be banned and "I don't connect online to avoid ban"? In all case your switch is like banned