Did erase contents in setting will change Apnonce ?

[unborn obsidian]

I saved my blob with blobsaver, I fixed my apnonce and generator with “read from device” function(non jailbreak).
But I erase my phone(no update, only erase in setting), did those value changed ?

[grave python]

@unborn obsidian thanks for creating a new thread!

Please use /solved to delete this thread when you're done.

[pastel stirrup]

Most likely I'm assuming

[jolly bear]

As far as I am aware, your blobs are now unusable, since theres no way to change your APNonce back. Your APNonce is regenerated every time you restore your phone, from what I remember

[unborn obsidian]

unfortunately, it true, I read apnonce again after erase, it has changed. Can i jailbreak and modify apnonce back to previous value?

Apnonce and generator both changed after erase

[pastel stirrup]

Bruh reading it in itself changes it

[pastel stirrup]

Also yes via jailbreaking you can change it back

[unborn obsidian]

It means blob will invalid after read it again ?

[pastel stirrup]

No

[unborn obsidian]

Can I update to 15.x even 16.x from 14.1 in future?

[unborn obsidian]

Use blob

[pastel stirrup]

Yes if you have a jailbreak

[jolly bear]

this is not true. your boot NONCE can be changed with a jailbreak, however your APNONCE cannot.

your apnonce is a key generated on idevice restore that verifies that all of the parts in your system, as well as your firmwares are all linked together and unmodified. this is why blobs saved for A12+ devices require the device's current apnonce.

[pastel stirrup]

What the fuck is a kernel Nonce

Good lord I hate A12 solely for existing

[jolly bear]

boot nonce sorry. long day

the boot nonce is related to the bootloader, the SEP, and the Baseband. it used to be the only thing that needed to be set (the nonce generator (aka: 0x1111111111111111)) in order to downgrade and successfully reboot.

once A12 came around, Apple seriously hardened security on the hardware level (hence why checkra1n doesnt work on it) and apnonce was a major part of that.

[jolly bear]

cheers to that

[pastel stirrup]

I thought apnonce=bootnonce though

Weird

[unborn obsidian]

so the blob became invalid when restore ?

[pastel stirrup]

No...

[jolly bear]

nope le sigh