Hacking Missing otp.bin

[yusuo]

I've got a9lh installed and all works good, emunand and cakes running fine but I'm missing otp.bin
I deleted this by accident as soon as I got the hack working properly.
I've still got all my nand backups from the process.
How would I got about getting the otp, is there an easier way seeing as it's already up and running?

 

[k3rizz3k]

As far as I understand, when you install a9lh with the guide, it uses your otp then, and it's ok to take it off your card. It's what I did, but I also listened to the guide and made several backups of the file.

 

[yusuo]

As far as I understand, when you install a9lh with the guide, it uses your otp then, and it's ok to take it off your card. It's what I did, but I also listened to the guide and made several backups of the file.

So, how do I get it back

 

[daxtsu]

How would I got about getting the otp, is there an easier way seeing as it's already up and running?

You would have to downgrade to 2.1 again (presumably by flashing the 2.1 emuNAND that you used before, to sysNAND) to get it in its raw form, even with A9LH. You don't really need it again though, since AuroraWright's SafeA9LHInstaller can handle updating or swithing A9LH forks without the OTP directly.

But if you still want it anyway, backup your current sysNAND, flash the 2.1 emuNAND you used and dump it, then go back to your current sysNAND dump.

 

[yusuo]

You would have to downgrade to 2.1 again (presumably by flashing the 2.1 emuNAND that you used before, to sysNAND) to get it in its raw form, even with A9LH. You don't really need it again though, since AuroraWright's SafeA9LHInstaller can handle updating or swithing A9LH forks without the OTP directly.

But if you still want it anyway, backup your current sysNAND, flash the 2.1 emuNAND you used and dump it, then go back to your current sysNAND dump.

So I just flash 2.1, get the otp and then restore my backup, all without leaving otp helper

 

[daxtsu]

So I just flash 2.1, get the otp and then restore my backup, all without leaving otp helper

You would have to reboot into 2.1, but otherwise, yeah. If you meant trying to flash, dump, and restore, all still while on A9LH, that won't work. You have to enter sysNAND 2.1 for a couple minutes so you can dump the OTP. There's no avoiding it.

 

[yusuo]

You would have to reboot into 2.1, but otherwise, yeah. If you meant trying to flash, dump, and restore, all still while on A9LH, that won't work. You have to enter sysNAND 2.1 for a couple minutes so you can dump the OTP. There's no avoiding it.

Cool, I'll just go back to the part of the guide that covers this and follow it to the letter from there

 

[yusuo]

You would have to reboot into 2.1, but otherwise, yeah. If you meant trying to flash, dump, and restore, all still while on A9LH, that won't work. You have to enter sysNAND 2.1 for a couple minutes so you can dump the OTP. There's no avoiding it.

I figured if I had done this I would of bricked my console, potentially. Surely I would need to firstly restore a copy of my pre a9lh sysnand and stuck cakes to boot into emunand. Wouldn't it of been the case that if I had just installed 2.1 to a a9lh sysnand things would have gone very wrong as I'm not sure but I don't think a9lh would of either blocked the firmware due to signature blocks or may not have been compatible with 2.1

 

[daxtsu]

I figured if I had done this I would of bricked my console, potentially. Surely I would need to firstly restore a copy of my pre a9lh sysnand and stuck cakes to boot into emunand. Wouldn't it of been the case that if I had just installed 2.1 to a a9lh sysnand things would have gone very wrong as I'm not sure but I don't think a9lh would of either blocked the firmware due to signature blocks or may not have been compatible with 2.1

Not really. A9LH isn't the one that provides FIRM0/FIRM1 protection, it's your CFW. Using Decrypt9 to flash an entire 2.1 backup would overwrite the entire NAND, wiping out A9LH. D0k3's working on a new version of Decrypt9 that will preserve A9LH when flashing, but no CFWs support loading 2.1 yet (and that still wouldn't let you get your OTP). If you want to get your OTP, you'll have to take a small risk.

If I'm wrong, someone can correct me, but there's no way to re-dump the OTP without being purely on 2.1 with no A9LH trickery going on that I am aware of.

 

[sup3rgh0st]

There is a chance you can use something like Recuva to recover the deleted file