Thanks but I backup NAND before I customized my NSWdont go online.
should have done an eMMC backup beforehand
Thanks But I want to ask you how to use a Backup NAND to restore (someone told me I need to have biskeydump and HackDiskMount)The safest way of not getting banned would be to make a NAND backup before doing ANYTHING. Use separate microSDs for SX OS and OFW.
Basically, make a full NAND backup before loading SX OS. ONLY USE SX OS WHILE OFFLINE! (Use airplane mode to be safe, there are preloaded "Nintendo" wireless networks that you can't see in Settings, if your Switch comes in range of one and you're not in airplane mode, it could connect and you could get banned!) After you're done playing with your backups, any time you want to play online with OFW you must restore your NAND backup that you just made before going into SX OS.
And you'd have to make a new NAND backup every time you decided to switch from OFW to SX OS.
We don't know all of the telemetry data the Switch sends. If you only kept one backup, that you kept reverting to, say your Switch sends a message to Nintendo that the last time it was played was July 1st, then you played online and it said July 15th. If you revert to your original nand backup, your Switch might tell Nintendo the last time you played was July 1st again. Since they know the last time they saw you playing it was July 15th, they'd be able to say something fishy was going on and ban you for it.
That's a simplified example, in reality we think they are doing this by looking at error history, but you get the idea.
There are other threads on this forum that will tell you how to restore your NAND backup, but basically it's a huge hassle to either have to backup your NAND or restore your nand before switching between SX OS and OFW.Thanks But I want to ask you how to use a Backup NAND to restore (someone told me I need to have biskeydump and HackDiskMount)
and if I can't restore it but get my sdcard out and download a legit game on my device memory and play online, it can be risky?
Personally I use SX OS (using a cert from Mario Kart 8 Deluxe in all games) in airplane mode and once I'm done I'll clear logs with Hekate and play online on OFW.
It's still possible they can tell you've used SX OS in the games you've played but so far no ban for me and I've played online, updated games etc. in OFW.
Basically you can't really do anything to guarantee you won't be banned because at this point in time no one really knows what Nintendo is looking at and what they could look at in the future to ban you. If you're really concerned about it you should probably use a separate switch for legitimate purchases.
If you've never run CFW/SX OS on your Switch before, and you always make a clean nand backup you can restore to before going into CFW/SX OS, and you always stay offline while using CFW/SX OS, then yes, it is possible to guarantee you won't be banned.
But it's a major pain in the ass that probably takes more effort than it's worth.