What about the Wii Firmware update 4.2, does it affect a Wiikey moded Wii?
For the moment there seems to be no problem updating to Nintendo’s Wii firmware 4.2 (using the safe updater in case you use Homebrew apps/channels) if you have a Wiikey installed. • It had been tested with WiiKey firmware 1.9S and the update to firmware 4.2 is working fine. • Later the Wiikey 1.99 beta was applied and the chip keep working fine with backups.