Yep! I solved the "wrong title key" by updating manually. (dragging arm9loaderhax.bin to the sdcard) This might be a good thing to add to the troubleshooting section.
I wonder what is wrong with star updater?
Thanks so much!
I'm having the same "wrong title key" error on the latest firmware, Luma, and FreeShop with encrypted keys from the most popular keys place. I used StarUpdater to update to the new Luma. I used the qr code to get the url into your software. I tried to download the latest version of the monster...
Cruisn on the Wii is one of my personal examples of that, it's considered one of the worst games of all time, I loved it and completed it several times.