1. Do you have your Switch keys? If not, use Lockpick (
https://github.com/shchmue/Lockpick) if 6.2 or below or Lockpick_RCM (
https://github.com/shchmue/Lockpick_RCM) if 7.0 or higher. Once you get them rename the prod.keys file to keys.txt.
2. Download NSC_Builder (
https://github.com/julesontheroad/NSC_BUILDER)
3. Extract it and put the keys.txt file into the ztools folder found in the NSC_Builder folder
4. Open the NSCB_Stable.bat, enter 2, drag & drop your XCI in the windows and enter, drag & drop the update and enter, enter 1, enter 2, enter 1, enter 7, choose a name for the new XCI and enter
It seems hard, but it's not actually. You'll get a new XCI with game + update patch to use it on 6.2. You can then put the XCI file onto your SD card and launch it from SX OS.
Regarding Goldealf and Tinfoil, yes these are the latest versions. But these two install games (only NSP for Goldleaf, NSP or XCI for Tinfoil).