Hacking Recover SBK?

[gudenau]

Is it possible to "recover" the SBK for a Switch after the one mod chip clears it out? I would like to use some software that requires that key but I have no idea if it is possible to recover it.

If it helps these are the files on my SD card that contain "SBK", found via `grep -R --ignore-case sbk`.

bootloader/sys/nyx.bin
backup/[a-f0-9]{8}/pkg2/pkg2_decr.bin
backup/[a-f0-9]{8}/pkg2/kernel.bin
backup/[a-f0-9]{8}/pkg2/ini1.bin
backup/[a-f0-9]{8}/pkg2/ini1/FS.kip1
backup/[a-f0-9]{8}/dumps/bootrom_patched.bin
backup/[a-f0-9]{8}/dumps/bootrom_unpatched.bin
backup/[a-f0-9]{8}/rawnand.bin.00
backup/[a-f0-9]{8}/rawnand.bin.01
backup/[a-f0-9]{8}/rawnand.bin.02
backup/[a-f0-9]{8}/rawnand.bin.03
backup/[a-f0-9]{8}/rawnand.bin.04
sept/payload.bin matches
sept/sept-secondary_00.enc matches
(a whole of game stuff skipped)

The backup is from before I installed the chip.

 

[gudenau]

I asked around a couple places and no one seems to know. Guess it's not possible.

Wonder if "reboot into RCM" would work.

 

[gudenau]

It looks like using the chip to boot into Hekate, rebooting into RCM, then using the RCM exploit allows one to get access to the SBK.

RCM:

--------------------- MERGED ---------------------------

And I just used biskeydump and it now works. This is pretty nice, but it means any (resonable) CFW is tethered...