Help/Support Downgrade support 10.2.1 to 10.2 prometeus

Sneezh · April 24, 2017

7 minutes ago, Lorenzo26 said:

Tried every single step! at the end, gaved me exactly same error! what to do lol?? anyone help

Note, you need to use the 10.3.1 IPSW not the 10.2.1.

But the problem is there have been some reports of the sep file being compatible or not...

Using it may disable your Touch ID, or worse.

Overall I wouldn't recommend it, you are a bit too late.

Max-Q · April 24, 2017

4 minutes ago, Sneezh said:

Note, you need to use the 10.3.1 IPSW not the 10.2.1.

But the problem is there have been some reports of the sep file being compatible or not...

Using it may disable your Touch ID, or worse.

Overall I wouldn't recommend it, you are a bit too late.

so, i cannot downgrade because sep file is incompatibile, or because is not signed anymore? my touch id not working anyway, button bricked changed with a non touch id button! Anyway, i can downgrade ? need advice, anything,i want to try something ! stayed at 10.2.1 for this reason!

Sneezh · April 24, 2017

6 minutes ago, Lorenzo26 said:

so, i cannot downgrade because sep file is incompatibile, or because is not signed anymore? my touch id not working anyway, button bricked changed with a non touch id button! Anyway, i can downgrade ? need advice, anything,i want to try something ! stayed at 10.2.1 for this reason!

You can try, but you may brick your device or worse (sim not detecting, etc.).

You may have stayed but 10.2.1 sep was compatible and now its not signed anymore, so it won't work.

Like i said you can only try with 10.3.1 files, but I would not recommend it.

Updated April 24, 2017 by Sneezh

Max-Q · April 24, 2017

My last question ! and we close it ! prometeus dont downgrade UNSIGNED IPSW if have shsh blobs?if yes why i cant? if not thats new to me! Thanks

Updated April 24, 2017 by Lorenzo26

Sneezh · April 25, 2017

7 hours ago, Lorenzo26 said:

My last question ! and we close it ! prometeus dont downgrade UNSIGNED IPSW if have shsh blobs?if yes why i cant? if not thats new to me! Thanks

You seem to not understand what I am saying, you can downgrade to 10.2 but you must get certain files from a signed IPA, now this was possible as it was compatible with 10.2.1 when it was still being signed. Now you must use an IPA from a firmware that is still being signed, which is 10.3.1. Since this firmware is reported to not being fully compatible it may cause problems to your phone after downgrading.

Max-Q · April 25, 2017

1 hour ago, Sneezh said:

You seem to not understand what I am saying, you can downgrade to 10.2 but you must get certain files from a signed IPA, now this was possible as it was compatible with 10.2.1 when it was still being signed. Now you must use an IPA from a firmware that is still being signed, which is 10.3.1. Since this firmware is reported to not being fully compatible it may cause problems to your phone after downgrading.

Ohh now i understand, can downgrade to unsigned 10.2 but need files from a signed ipa file and needs to be compatibile too! Thanks alot for advices and for all explanations! Closed?