CRAP!!
I wanted to "upgrade" my mate's 1st gen (1.1.4) Unlocked iPhone to version 2.1 and use the Pwnage 2.1 tool to do so. (Tried Quickpwn 1.1 first, but that doesn't seem to unlock bricked 1st gen iPhones...)
As I personally own a real 3G iPhone, and have left the unlocking / jailbreaking scene behind me after the 1.1.4 on my first iPhone, I haven't been really up-to-date on hacking the 2.x firmware.
So, after repeatedly putting this 1st gen iPhone in DFU mode, and restoring the official 2.1 firmware, I have made countless "Custom_Restore_IPSW's" for this iPhone, and every time whilst restoring the iPhone with the "Custom_Restore_IPSW" made by PwnageTool 2.1, encounted an error (6) in iTunes telling me that I can't restore...
But, selecting a real IPSW does work...
Tried the same procedure over and over again on another Mac too, but with the same exceedingly annoying result!
So, I Googled.... and have found similar issues with people using PwnageTool 2.1 with iTunes 8.0 running on Mac OS X 10.5.5.
Before I will downgrade a Mac to Mac OS X 10.5.4, I ask you lovely people...: Can anyone confirm this? Is my issue purely Mac OS X 10.5.5 related..? EDIT: Or iTunes 8 related??
I hate this kind of thing.... a mate asks if you could upgrade his iPhone... seems piece of cake... seen the iClarify tutorial.... 4 hours later still having no results! So, there goes another quiet evening.