wii won't read sd card ios 37 problem

I think you should format your console after backing up any important data. Please remove all external memory drives/cards before doing so and then start fresh. The most common cause of errors like this are a “stubbed ios” and d2x would be your best workaround. Make sure to reinstall ios149, 122, 121 and 132 when you’re finished getting back to the source of your issue.