I recently switched from Rednand to Sysnand and now about 350gb of my installed games no longer work.
I would rather like to avoid complete re-installation. Is there a way to install just the tickets?
WHAT FOLLOWS IS INFORMATIONAL, AND NOT A THOROUGHLY TESTED PROCESS. USE AT YOUR OWN RISK.
Tickets are stored under /storage_slc/rights/ticket/apps. That's what tik2sd backs up. If you run tik2sd on rednand, rename sd:/tik2sd to sd:/tik2sd_rednand, then run it again under sysnand, you'll have both sets of tickets.
From there, you'd have to do a binary append of each of the
rednand's tik files to the
sysnand's file of the same name, copy any rednand tik file which doesn't have a corresponding sysnand file, then ftp the updated directory into /storage_slc/rights/ticket/apps on sysnand using ftpiiu_everywhere.
That would give you the tickets you need. Unfortunately, our recent experience with trying to install a title under /usr/title/00050000/xxxxxxx on FAT32 by copying the files and ticket manually suggests that there's something else that is needed in addition to the ticket, but you've at least got to the point of seeing the title instead of just "???" on the menu, so you're doing better than most.
At this point, I hope you're saying to yourself that there's no way in hell that you'd try this, and I certainly wouldn't recommend it, but I wanted you to know what would be involved so that reinstallation will seem like the lesser evil.
If you do decide to do it, REMOVE CBHC (if you have it), test with a couple titles first by looking up their title IDs in sd:/tik2sd_rednand/keys.txt, and appending and ftping only those couple files. If those titles work, you can do the rest.