Downgrading 4.0 GM to 3.1.3
So if you are reading this, your probably in the same situation I was. You have installed iOS4, most likely the GM and you have found out that it sucks ass and you want to go back to 3.1.3. You, like me, probably tried to go back but iTunes won’t let you!? Well I am going to show you how to get back to 3.1.3
The first step is to put your phone in DFU Mode. Go and connect the iPhone to the Mac/PC. iTunes will be like “OMFG your iPhone is in recovery mode” at which point you click on restore. At this point on mac i clicked “alt” – “restore” and selected a 3.1.3 restore image I have. You will get the error that your iPhone cannot be restored….. DON’T Panic. Go HERE and download iRecovery, pick the one appropriate to you (Windows/Mac). Next open up a terminal window and type:
cd /directory/to/iRecovery then type ./iRecovery -s
Wait for iRecovery to load then run the following commands one at a time (it says its going to bring up a cmd prompt – it never does):
setenv auto-boot true
saveenv
/exit
Then go ahead and do the restore process again – you will now be back at 3.1.3!!!!
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27 year old oil worker based in Aberdeen, Scotland.