Accessing Wii home

[Smellypuppy0]

Hello, For the past few days I have been trying to access the Wii home but have been unable to. I have tried using my nand and performing online system update but neither helped, ut always ends with an error code. Any help would be appreciated. If it helps the error says "intcpu: unknown instruction efa282d9 at pc = 81330000 last_pc + 00000000 LR = 81330000"