Downgrading

rmeadejr

macrumors 6502a
Original poster
Aug 25, 2009
687
129
San Francisco-Twin Peaks
Came across this on the Apple Developer Forums, I can't remember if it is true or not, but i thought i would share it.


Just be advised; historically, Beta 1 has usually been very simple to roll-back from. Usually begining with Beta 2, Apple begins making baseband level changes on the device, preventing downgrading.
 

aDRock1154

macrumors 65816
Nov 15, 2011
1,387
5
Ohio
Came across this on the Apple Developer Forums, I can't remember if it is true or not, but i thought i would share it.


Just be advised; historically, Beta 1 has usually been very simple to roll-back from. Usually begining with Beta 2, Apple begins making baseband level changes on the device, preventing downgrading.
A DFU restore will let you downgrade to the latest firmware Apple is signing.
 

Quercus Alba

macrumors member
Jun 19, 2013
76
0
That may be, but several people have had trouble restoring in DFU mode.
That may be, but 99% of the time people only have trouble with DFU restores because:

1) They're doing it wrong (and will respond 20 minutes later with "nvm guys I worked it out" :p)
2) Their home/lock buttons are broken

In my experience (hundreds of kids trying to fix glitchy jailbreaks) these are the only two reasons a DFU restore to currently-signed firmware won't work
 

aDRock1154

macrumors 65816
Nov 15, 2011
1,387
5
Ohio
That may be, but 99% of the time people only have trouble with DFU restores because:

1) They're doing it wrong (and will respond 20 minutes later with "nvm guys I worked it out" :p)
2) Their home/lock buttons are broken

In my experience (hundreds of kids trying to fix glitchy jailbreaks) these are the only two reasons a DFU restore to currently-signed firmware won't work
Agree with this 110%
 

BasicGreatGuy

Contributor
Sep 21, 2012
11,939
11,003
In the middle of several books.
That may be, but 99% of the time people only have trouble with DFU restores because:

1) They're doing it wrong (and will respond 20 minutes later with "nvm guys I worked it out" :p)
2) Their home/lock buttons are broken

In my experience (hundreds of kids trying to fix glitchy jailbreaks) these are the only two reasons a DFU restore to currently-signed firmware won't work
As a whole, you are probably right.