I'm on firmware 10.6 and am following the downgrade tutorial that is on the other thread, however menuhax seems to not install by any way. I'm to set it up via Ninjhax but I'm getting some error on installing and i dont get the "success" message. It says towards the end: Install Failed: 0x0000002. An error occured. It seems to have something to do with the file USA25600_old3ds.lz as it says it failed to get its filesize. Can anyone help me ??