I got a N3DS with 8.1.0-0 system version, which means it does not have browser, thus no browserhax. I have searched various guides,It seems that oot3dhax should be possible but currently not exist. I got OoT3D cart and an R4i save dongle, but there is no "ropbin""sav file for 8.1.0" or whatever it needs for CFW to use. https://gbatemp.net/threads/tutorial-update-3ds-8-1-to-9-x.406407/ I have searched and found this tutorial, but it requires CubicNinja, and is fairly complex for me. But I also have a GW card. And I have successfully booted into GW menu using OOT3D save provided by GW. (thanks to the save dongle) Now the questions: Can I use GW card to "downgrade" SysNand to 9.2? Is there any reason to do so? (other than CFW,obviously) It seems that it is possible to install CFW with GW card, is there a guide for it?