Hi, sorry for creating a new thread. i was going around the site and also the 'net for info on how i can fix my chipped wii and just got confused

anyway. here's what happened to my Wii. I bought it 2nd hand and the seller says that it's already chipped (games can be launched from the disc channel)
I put in a copy of Punchout (a backup) and it asked me to update. I accidentally pressed yes and after updating I was able to play the game normally. but the next day when I was about to change the time on my Wii, I can't access it and it just shows me an Opera error. (sins of a noob. yes. Im a noob in Wii homebrew scene)
I'm not sure what version I was using prior to the Punchout update.
I still have my Homebrew Channel but can't access the Wii settings.
Can you provide a step by step procedure on how can I resolve this?
Thanks in advance!