I decided to post this thread, because i had come across this problem myself personally today, and i spent the better part of today searching this site and other sites, to piece together information about how to do this, why it didnt seem to work, and to figure out what infantile steps i wasn't taking, that other partial guides left off having deemed it trivial information, but the uninformed such as myself have no idea about, and tear our hair out over. So to try and prevent any other noob like myself from experiencing the stress and panic i felt today, i will keep the steps very small, use the simplest language i know, and try not to to leave the smallest detail out. by the by, i started with a japanese wii 3.3J, soft modded (ie. no mod chip) with homebrew installed already, before i tried to update my firmware, resulting in a semi brick
So here is it. My step by tiny little step guide on how to use the Bootmii nand backup you made (after using the hackmii 0.3 installer to install bootmii and create your nand back up... there are many guides on how to do this here, but just incase, and you want all the info at your finger tips, i will provide a couple of links to threads created by some clever chaps on this site
http://gbatemp.net/index.php?showtopic=171901
or
http://gbatemp.net/index.php?showtopic=168890
the info is there, and is easy to understand. youll find it in sections where they talk about backing up the nand
anyway, so back to the the restore. so for some reason your stuff has all gone bonkers for some reason, and not you cannot access the wii system menu (the menu with the channels on it, the one that is on your wii right from the get go). thank goodness you have bootmii enabled. put the bootmii folder that was created when you installed bootmii back onto the root of the sd card (if you took it off your sd card like many guides tell you) or rename it again the way it was orignally (if you renamed it, like many guides suggest). doing this, when you turn on your semibricked wii with the sd card in the slot, it will load into bootmii (again, see the previously mentioned 2 guides on clear explanations on how to install bootmii, what to do with the files, etc etc)
now. you need to find your nand.bin and keys.bin files. these are the files that were created when you made you nand backup using bootmii. and if you followed the directions of the afformentioned 2 guides well, you would have put these files in a safe place.
this is however where you will hit a bit of a snag. you can just put these two files back onto the root of the sd card, load bootmii, and then copy the backup off the sd card back onto the wii.
you first need to fix the files (i know, i know... why are they broken?.. it beats the crap out of me, some bug or something. eitherway, it doesnt matter, because its fixable thanks to BlackAce83 and redia (some dudes on here, who know stuff we dont)
first you need to download this file
http://rapidshare.com/files/269802615/Bootmii-KEYFIX.rar
open this rar file, and extract the contents onto your desktop or wherever. i personally created a new empty folder called nandfix on my desktop and extracted it to there. so now in wherever you extracted it to (for the explanations' clarity's sake lets just say you also made a new folder called nandfix on your desktop), so now in this nandfix folder you have an .exe file called
Bootmii-KEYFIX.exe
now find those nand.bin and keys.bin files i told you to find before (you put them in a safe place remember). now what you need to do is to COPY both of these. this is important just in case god forbid, things go haywire (its highly unlikely though, but hey, better to be safe then sorry) and it doesnt work, and your original nand backup files are rendered useless.
so like i said, copy the nand.bin and keys.bin files and the paste them into your recently created "nandfix" folder.
so now inside this nandfix folder you have 3 files
Bootmii-KEYFIX.exe
nand.bin
keys.bin
go to the Bootmii-KEYFIX.exe file and run it (double click) it will do a little bit of thingy for you, and then you will have 2 new files appear. one called log.txt and one called Keys-Fixed.bin.
so now your nandfix folder has this inside it
Bootmii-KEYFIX.exe
nand.bin
keys.bin
log.txt
Keys-Fixed.bin
What you need to do now, is copy or cut (its up to you) the nand.bin and Keys-Fixed.bin files and paste them in the root of your sd card.
Once you have done this you have to rename the Keys-Fixed.bin file to keys.bin
now, put the sd card into you sd card slot on the wii. turn it on. once you load the bootmii menu, press the power button 3 times till you highlight the little gears icon, press reset to choose it. it opens up the next menu, where you will press the power button once, so that you are highlighting the icon that has the arrow coming off the sd card into the chip (this is the option to load the backup off the sd card onto you wii, the second option/icon). press the reset button to choose this icon.
follow the on screen instructions, and robert's your father's brother.
hope this helps. i know i could have used a guide like this earlier today. anyway, good luck out there
ciao
So here is it. My step by tiny little step guide on how to use the Bootmii nand backup you made (after using the hackmii 0.3 installer to install bootmii and create your nand back up... there are many guides on how to do this here, but just incase, and you want all the info at your finger tips, i will provide a couple of links to threads created by some clever chaps on this site
http://gbatemp.net/index.php?showtopic=171901
or
http://gbatemp.net/index.php?showtopic=168890
the info is there, and is easy to understand. youll find it in sections where they talk about backing up the nand
anyway, so back to the the restore. so for some reason your stuff has all gone bonkers for some reason, and not you cannot access the wii system menu (the menu with the channels on it, the one that is on your wii right from the get go). thank goodness you have bootmii enabled. put the bootmii folder that was created when you installed bootmii back onto the root of the sd card (if you took it off your sd card like many guides tell you) or rename it again the way it was orignally (if you renamed it, like many guides suggest). doing this, when you turn on your semibricked wii with the sd card in the slot, it will load into bootmii (again, see the previously mentioned 2 guides on clear explanations on how to install bootmii, what to do with the files, etc etc)
now. you need to find your nand.bin and keys.bin files. these are the files that were created when you made you nand backup using bootmii. and if you followed the directions of the afformentioned 2 guides well, you would have put these files in a safe place.
this is however where you will hit a bit of a snag. you can just put these two files back onto the root of the sd card, load bootmii, and then copy the backup off the sd card back onto the wii.
you first need to fix the files (i know, i know... why are they broken?.. it beats the crap out of me, some bug or something. eitherway, it doesnt matter, because its fixable thanks to BlackAce83 and redia (some dudes on here, who know stuff we dont)
first you need to download this file
http://rapidshare.com/files/269802615/Bootmii-KEYFIX.rar
open this rar file, and extract the contents onto your desktop or wherever. i personally created a new empty folder called nandfix on my desktop and extracted it to there. so now in wherever you extracted it to (for the explanations' clarity's sake lets just say you also made a new folder called nandfix on your desktop), so now in this nandfix folder you have an .exe file called
Bootmii-KEYFIX.exe
now find those nand.bin and keys.bin files i told you to find before (you put them in a safe place remember). now what you need to do is to COPY both of these. this is important just in case god forbid, things go haywire (its highly unlikely though, but hey, better to be safe then sorry) and it doesnt work, and your original nand backup files are rendered useless.
so like i said, copy the nand.bin and keys.bin files and the paste them into your recently created "nandfix" folder.
so now inside this nandfix folder you have 3 files
Bootmii-KEYFIX.exe
nand.bin
keys.bin
go to the Bootmii-KEYFIX.exe file and run it (double click) it will do a little bit of thingy for you, and then you will have 2 new files appear. one called log.txt and one called Keys-Fixed.bin.
so now your nandfix folder has this inside it
Bootmii-KEYFIX.exe
nand.bin
keys.bin
log.txt
Keys-Fixed.bin
What you need to do now, is copy or cut (its up to you) the nand.bin and Keys-Fixed.bin files and paste them in the root of your sd card.
Once you have done this you have to rename the Keys-Fixed.bin file to keys.bin
now, put the sd card into you sd card slot on the wii. turn it on. once you load the bootmii menu, press the power button 3 times till you highlight the little gears icon, press reset to choose it. it opens up the next menu, where you will press the power button once, so that you are highlighting the icon that has the arrow coming off the sd card into the chip (this is the option to load the backup off the sd card onto you wii, the second option/icon). press the reset button to choose this icon.
follow the on screen instructions, and robert's your father's brother.
hope this helps. i know i could have used a guide like this earlier today. anyway, good luck out there
ciao