OK we need more tutorials for this since we lack software methods to restore secretsector0x96.bak (is it named as this?) and the latest SafeB9SInstaller has divided F0F1 into firm0_enc.bak + firm1_enc.bak.
Tbh if a9lh gets abandoned and everyone upgrades thus fixes their secret sector then everyone will be fine, and if/when ntrboothax is released people will have even less reason to complain
Although the people doing random stuff by themselves and not totally understanding what they are doing don't really have much room to complain, the first step of most guides is "make a nand backup and keep it safe" if you plan to go back to stock that is what you should be restoring not just random bits unless you completely understand the process and accept the risks
Not to mention there is pitfalls from trying to manually uninstall b9s without just restoring a full backup confirmed working nand backuo, if you installed b9s on stock 9.2 then updated to 11.4 sysnand, restoring a backup of the 9.2 FIRM would also result in a brick even though the secret sector is valid
TL: DR avoid trying to uninstall a9lh/b9s without just restoring a full nand backup
Noobs always didn't do that since the latest guide(tm) didn't teach them to backup a full NAND before installing B9S.
To help a guy with no full backup but only F0 F1 SS0x96 backups to back to stock is the key problem in this thread.
BTW, latest SafeB9SInstaller divides firm0firm1.bak into firm0_enc.bak and firm1_enc.bak.
I haven't confirmed that whether the F0 & F1 restoring in latest GM9 did an encryption or not.
If not, then they're available to be directly restored by GM9.
If yes, then we should find more compatible methods.
Last edited by MelonGx,
i'm exploring the idea of restoring to stock. i have nand backups from when I did A9LH. is there anyway to check whether they are stock nand backups or if they are a9lh backups? I'm 99% certain they are stock backups, but would prefer 100% certainty before moving forward (if I choose to do that)
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If they are a9lh backups, that's fine as it's easy to remove a9lh using SafeArm9Installer.
Hi Guys, i've also dealt with this topic in the last days.
That would be the best way, to get a clean Backup from the nand. But in my case (i've also worked with the tutorial on 3ds.guide), my nand gets backedup with GM9, after B9S was already installed, so firm0 & firm1 were already modified.
I've used the hardmod-b9s-installer1.0 to inject my backuped firm0firm1.bak in my nand.bin (which contained B9S), so it should be stock now, but i didn't restored it until now, because :
So now im not sure that the backup which i created is good. What means "the integrated F0F1" ? I've used the "restore-firm0firm1.exe" Application from the hardmod-b9s-installer1.0 to inject my backuped firm0firm1.bak (created by the SafeB9SInstaller) in my nand.bin (created by GodMode9). I think it should work after i restore it with GodMode9 !? But for sure, i don't wanna risk a brick...
I've tried this, but in the latest releases of GodMode9 & Decrypt9, i could find only an option called "Validate NAND Dump" or "Verify file", which says, that both backups (the one with modified firm0.bin & firm1.bin and the one with stock restored firm0.bin & firm1.bin) are valid. It doesn't gives any further information about the content of firm0 & firm1...
In the actual release of GM9, i found only the option "Restore SysNand (safe)"...
The actual Decrypt9WIP gives more options, as "NAND RESTORE" without "(keep hax) and one called "NAND RESTORE (forced)". Don't know which one i should try, or whether i should try anything at all...
I wish there would be a Safe B9S Uninstaller, which allows to restore the firm0.bin & firm1.bin (from the firm0firm1.bak, and also from the new firm0_enc.bak & firm1_enc.bak backup formats).
Even the HackMii Installer for the Wii had an uninstall funtion for BootMii in Boot2. ;-)
In this sense, many greetings, Snap.
That would be the best way, to get a clean Backup from the nand. But in my case (i've also worked with the tutorial on 3ds.guide), my nand gets backedup with GM9, after B9S was already installed, so firm0 & firm1 were already modified.
I've used the hardmod-b9s-installer1.0 to inject my backuped firm0firm1.bak in my nand.bin (which contained B9S), so it should be stock now, but i didn't restored it until now, because :
So now im not sure that the backup which i created is good. What means "the integrated F0F1" ? I've used the "restore-firm0firm1.exe" Application from the hardmod-b9s-installer1.0 to inject my backuped firm0firm1.bak (created by the SafeB9SInstaller) in my nand.bin (created by GodMode9). I think it should work after i restore it with GodMode9 !? But for sure, i don't wanna risk a brick...
I've tried this, but in the latest releases of GodMode9 & Decrypt9, i could find only an option called "Validate NAND Dump" or "Verify file", which says, that both backups (the one with modified firm0.bin & firm1.bin and the one with stock restored firm0.bin & firm1.bin) are valid. It doesn't gives any further information about the content of firm0 & firm1...
In the actual release of GM9, i found only the option "Restore SysNand (safe)"...
The actual Decrypt9WIP gives more options, as "NAND RESTORE" without "(keep hax) and one called "NAND RESTORE (forced)". Don't know which one i should try, or whether i should try anything at all...
I wish there would be a Safe B9S Uninstaller, which allows to restore the firm0.bin & firm1.bin (from the firm0firm1.bak, and also from the new firm0_enc.bak & firm1_enc.bak backup formats).
Even the HackMii Installer for the Wii had an uninstall funtion for BootMii in Boot2. ;-)
In this sense, many greetings, Snap.
Afaik restoring firm0firm1 would brick the system if it was created on a system that had a9lh due to secret sector not being properly corrupted with a a9lh-hacked FIRM.
Yes. If I am not mistaken you would need to restore the corrupted secret sector that A9LH requires if you upgraded from A9LH to B9S. Otherwise you will end up with a brick due to how A9LH works.
Then I have no idea since I don't know how to restore secret_sector_0x96.bak first.
Good, no A9LH in that backup
Just restore it with a non-keep-a9lh option to ensure kernel partitions and secret sector are all flashed
To do a non-"safe" restore with GM9, just paste the backup over (sysnand virtual)/nand.bin or nandmin.bin
Last edited by Ryccardo,
a friend of mine wants to return to stock but doesnt have a nand backup prior to b9s what coul he do ?
Thank you Guys for all the replies !
Yeah that's the reason why i will restore the stock firm0 & firm1. I just want a 100% proper nand backup left.
I think the firm0.bin & firm1.bin files are also unique on every device (otherwise they wouldn't backuped during the B9S installation), right ?
Somewhere i've read, when the system was updatet to a newer firmware release, a restore with an old backup (created on a lower firmware version) can also brick the device !?
So to keep a clean backup up to date, which allows to go back to stock at everey time, i have to do the following process :
1. Restore the clean backup which was generetad on the actual firmware. 2. Update the System to the new firmware. 3. Make a new backup on the new firmware.
That means also, i have to backup / restore all my safe- & userdata and dump / reinstall all the titles i have installed on the system, everytime i update the device... :-/
Thats quite different to the nand backups which were created on the Wii using BootMii. Those backups contained all the system data, so a restore back to a lower firmware was possible.
It looks like the nand backups which made with GM9/D9WIP, doesn't contains the complete system data from all the nand partitions...
Ah, i've seen, there's a file called nand.bin in the "S:SYSNAND Virtual" Folder, but didn't know i can just overwrite it with my bakup file. Thank you, and also MelonGx for this explanation !
Okay, now i understand. I modded my 3DS quite 3 weeks ago with B9S v1.0 (A9LH wasn't on it before). So my backup isn't critical in this point.
I've also read, that the B9S installer will recover the secret sector, when it was modified due to an earlier A9LH installation ?
If your friend has a backup after B9S and the backuped firm0firm1.bak (generated by the SafeB9SInstaller < v1.2) he can go the same way as me. Use the "restore-firm0firm1.exe" application from the hardmod-b9s-installer1.0 to inject the clean firm0firm1.bak to his nand.bin and restore it with GM9/D9WIP (without keeping the hax).
Is there already a possibility to restore the new firm0_enc.bak & firm1_enc.bak files (generated by the SafeB9SInstaller v1.2) ?
Thanks again for all your help, Snap.
Yeah that's the reason why i will restore the stock firm0 & firm1. I just want a 100% proper nand backup left.
I think the firm0.bin & firm1.bin files are also unique on every device (otherwise they wouldn't backuped during the B9S installation), right ?
Somewhere i've read, when the system was updatet to a newer firmware release, a restore with an old backup (created on a lower firmware version) can also brick the device !?
So to keep a clean backup up to date, which allows to go back to stock at everey time, i have to do the following process :
1. Restore the clean backup which was generetad on the actual firmware. 2. Update the System to the new firmware. 3. Make a new backup on the new firmware.
That means also, i have to backup / restore all my safe- & userdata and dump / reinstall all the titles i have installed on the system, everytime i update the device... :-/
Thats quite different to the nand backups which were created on the Wii using BootMii. Those backups contained all the system data, so a restore back to a lower firmware was possible.
It looks like the nand backups which made with GM9/D9WIP, doesn't contains the complete system data from all the nand partitions...
Ah, i've seen, there's a file called nand.bin in the "S:SYSNAND Virtual" Folder, but didn't know i can just overwrite it with my bakup file. Thank you, and also MelonGx for this explanation !
Okay, now i understand. I modded my 3DS quite 3 weeks ago with B9S v1.0 (A9LH wasn't on it before). So my backup isn't critical in this point.
I've also read, that the B9S installer will recover the secret sector, when it was modified due to an earlier A9LH installation ?
If your friend has a backup after B9S and the backuped firm0firm1.bak (generated by the SafeB9SInstaller < v1.2) he can go the same way as me. Use the "restore-firm0firm1.exe" application from the hardmod-b9s-installer1.0 to inject the clean firm0firm1.bak to his nand.bin and restore it with GM9/D9WIP (without keeping the hax).
Is there already a possibility to restore the new firm0_enc.bak & firm1_enc.bak files (generated by the SafeB9SInstaller v1.2) ?
Thanks again for all your help, Snap.
Last edited by Snap00,
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