Hi I think I have the solution to your problem for
NEOGAMMA ONLY.
Requirments:
You must have an active internet connection with your wii.
SD Card (The one you use your homebrew apps with)
A computer, either with a sd card port or an external sd card reader
This solution worked for me
1. First download pimp my wii and install it on your sd card (sd card with the homebrew apps) by draging the folder into the apps folder on your sd card
2. Open pimp my wii on your wii
3. Go to the bottom of the screen and select Update, then follow the simple instructions. Once it is finished it should quit back to homebrew, then reopen it
4. Select the first option and follow the instructions to update, fix and download missing IOS's for you automatically,
DO NOT TURN OFF YOUR WII AT ANY STAGE, PLEASE BE PATIENT.
5. Select exit and
UNINSTALL NEOGAMMA from the homebrew channel and if it is a channel on your wii go to the wii menu, settings, data managment, channels, look for neogamma and click it and click erase.
6. Once this has finished eject the sd card, put it into your computer and go to this link:
http://www18.zippyshare.com/v/47142954/file.html Download the file.
7. Extract and open the folder, copy the NeoGamma and the sourcecode folder to the root of your sd card, then open the apps folder in the folder you just downloaded, copy the folder from there into the apps folder on your sd card. (If you dont have an apps folder in your sd card, simply make one. All letters must be lowercase if your making one)
Test NeoGamma to see if it works, if it does then your good to go, if it doesn't keep reading on.
IF IT DOESN'T WORK AND YOU NEED TO KEEP READING ON, DO NOT REVERT OR DELETE ANYTHING I TOLD YOU TO DO IN THE FIRST SET OF INSTRUCTIONS. Don't worry if it doesn't work with the top instructions. It didn't work for me either so I had to continue on with the bottom set of instruction's.
8. Then go to this link:
http://www66.zippyshare.com/v/7772311/file.html Download the file.
9. Extract and copy the extracted folder in your apps folder on your sd card.
10. Put the sd card in your wii and open the cIOS Installer
(Almost done, bear with me)
11. If you install IOS249 with base IOS56, and then install IOS250 with base IOS57, go to NeoGamma's option menu, Genral, and set NeoGamma's "IOS for games" to "Autodetect", then it should work.
Congrats you now should have NeoGamma working!
Yours Scincerley, Jdyamen123