Had 3.4US with bootmii v2 installed to boot2, HBC, DVDX. Upgraded to Nintendo's 4.2. HBC and DVDX survived, bootmii got wiped out, so I cannot even restore the nand backup. Tried installing bootmii v6 via bannerbomb, ran successfully, output told me that it could install HBC and DVDX but not bootmii, "boot2 could not be assembled (-1010000000)". Tried several different things, including instby lego68 - Getting Started