Hacking Question Downgrade from 9.0.0 to 8.1.0???

[Stallion]

I was on 8.1.0, but since I updated my Switch to 9.0.0 I cannot play SSBU xci, it says the game cart cannot be used with the console, but the weird thing is that's the only game that have that problem, every other xci game I have works perfectly fine...

So, can I downgrade from 9.0.0 to 8.1.0 again? I have the 8.1.0 files on my SD, i updated to 9.0.0 using ChoidujourNX.

I also have a NAND backup from when I had installed SX OS 2.9.0 Beta and ofw 8.1.0, if I cannot downgrade using ChoidujourNX.can I downgrade the ofw by restoring the NAND backup? I have never restored a NAND backup so I don't really know what changes do it to the console.

 

[lolcatzuru]

I was on 8.1.0, but since I updated my Switch to 9.0.0 I cannot play SSBU xci, it says the game cart cannot be used with the console, but the weird thing is that's the only game that have that problem, every other xci game I have works perfectly fine...

So, can I downgrade from 9.0.0 to 8.1.0 again? I have the 8.1.0 files on my SD, i updated to 9.0.0 using ChoidujourNX.

I also have a NAND backup from when I had installed SX OS 2.9.0 Beta and ofw 8.1.0, if I cannot downgrade using ChoidujourNX.can I downgrade the ofw by restoring the NAND backup? I have never restored a NAND backup so I don't really know what changes do it to the console.

I would caution against it probably

 

[mav2010]

If it’s only that one game, then I would rather not downgrade or restore (at least not on sysnand).

Get another XCI of that game or wait for the next SXOS update. It is known that some older combined XCIs with updates or DLCs included do not work at the moment.

 

[lpoolm]

I have updated in the past and games have stopped working on sx, just delete the game and reinstall and it always works for me doing that.