You downgraded your wii from 4.3 to 4.1. You failed to remove stub-ios70-v6912 and install system-ios70-v6687. Your wii is bricked, there is nothing you can do without boot2 bootmii.
If you have a nand.bin or from a bootmii nand backup, you can have the nand reprogrammed by someone who does that sort of thing. If you don't have a nand backup from bootmii and you don't have boot2 bootmii, the wii is bricked for good.
You should have followed a decend downgrade method, like mine. Leaving a stubed system ios above your system menu is a historical fail of epic proportion.