Either use
Savegame manager GX or do the following: put the save named data.bin in your Wii SD in /private/wii/title/XXXX where XXXX is the game's ID.
According to a quick search i did, your ID should be ST7E01 so name the last folder ST7E. Now put the SD in your Wii slot, go to settings->Data management->saves-> SD and copy the savegame from SD to Wii NAND. If it doesn't let you copy it due to protection you can install priiloader and force disable save copy protection.
Good to know you got it working.
Now about the ''update'' prompt, i can think of 2 solutions:
1. Use Priiloader and turn off the disc updates. This will now work for any and all games.
2. Use a Wii iso scrubber tool and ''take out'' the update portion from the iso.
I have no experience in the latter unfortunately, i have only gone the priiloader way.