There really is no way to play "without" it. It is likely hard coded into the game animations and play whether you have it in inventory or not.
It's the first item you get. The entire game is based on it. It's not like other items that are optional.
Once you save, it will be there. No need to re-run trainer. Except for speed and moon jump, that needs to be enabled via trainer (tcpgecko running) each time.
Correct. You should have the following the tcpgecko folder (it's own folder in the "apps" folder):
tcpgecko.elf
icon.png
meta.xml
codehandler.bin (here)
When you started tcpgecko, you selected "X", right?
I think it connects to port 21 on the wiiU. At least that's the port that FTPiiu connects through, might be the same.
Maybe temporarily disable firewall and see if that helps?
You have the latest tcpgecko running in the background before you load the game up on the wiiU correct?
You also entered in the correct IP address of the wiiU?
Lastly, do you have any firewall program running? Norton was blocking the program for me at first, but, once I trusted the program it...
Perhaps I'm missing it (or it cannot be done on US versions of the game yet), but, where and how do you rename items items in the trainer?
Sorry for being naive. Everything else has obvious and straight forward.
Can I assume that the debug feature is not enabled for US versions of the game? All other modifications work, but cannot change actual items to other items as "save" is grayed out on the debug menu.
It worked perfectly on mine! Injected save into US, WUP installed version on my USB HDD with no issues.
I did have to restart game after entering cave of shadows for the very first time. Then it worked without a hiccup!