......... I'll be back when I'm struggling again, won't be long at this rate...
Sooo. I backed up my NAND, extracted keys etc. Now I've got as far as putting Tinfoil on my SD card but the installer won't launch ("Could not start the software"). The Album is in Applet Mode, I gather that holding R and/or ZR whilst clicking a game is supposed to switch out of Applet Mode or at least allow programmes to run properly. However this doesn't work for me, either the game starts (the one with a cart in the machine) or it just says "Insert the game card".
Now I understand that another issue could be Sigpatches. But all the CFW files I've used have been created in the last week or so, since 16.0.0, which is what my Switch is on so I'm assuming I don't need to do that. Is that correct?