@stangri:
Can't speak for 1/, but for 2/, some of the 4.0.x backups floating around used the crappy low-level screensavers switch. You'll have to revert it to be able to update.
@Mike76: Yup, JailBreak + USBNet. You'll still have to go through diags *once*, and you'll have usbnet installed on main, so the backups won't be completely vanilla, but for a device on 4.1.x, that's the best we can do.
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