iOS 4.2.1 brings baseband signature check, unlockers warned to wait

4.2.1 update killed one of my favorite Email features, "DELETE ALL". The Delete All feature was a feature that Apple appears to have hidden*, but I found it, and I used it ALL the time, now with the 4.2.1 update it's been removed. :-(

I don't know if it was an intentional removal or not, but I am left wondering 2 things:

1. Why was this feature ever hidden to begin with?
2. Why is it gone now?

* you had to select edit, check an Email to delete, press and hold the Delete button, uncheck the the email that you had checked to be deleted, release the Delete button and then a "Delete All" option would appear.

Why don't the people who want to use their phone on non-AT&T networks just get a phone from Canada/UK/Australia where they are sold unlocked from the Apple store? Surely the market for soft unlocks has to be shrinking.

Why don't the people who want to use their phone on non-AT&T networks just get a phone from Canada/UK/Australia where they are sold unlocked from the Apple store. Surely the market for soft unlocks has to be shrinking.

I am surprised Apple hasnt changed the iOS main firmware so it will refuse to boot and failt to work if the baseband version doesnt match (i.e. if the baseband doesnt match, the messages/commands/calls sent to the baseband wont be what the old baseband wants and hence it will be unable to properly function)

Thank you guys for the help. I used a different computer and it worked.

When I first installed the 4.2 GM, I kept getting iTunes errors (which left my phone in restore mode). I ended up going to another machine to do the update (after first trying to uninstall/reinstall iTunes, etc).

Since then, I noticed that firmware umbrella had patched my "/private/etc/hosts" with an override to "gs.apple.com". I don't know if that was the reason, but I suspected it. I removed that line. When I updated to 4.2.1, all worked fine.

So, I suggest you look at this if you are getting iTunes errors during the upgrade and you've ever had the firmware umbrella (save SHSH utility) installed.

On Tuesday at 2:30pm I decided to update my iPhone 3G to the latest iOs(4.2). It previously had iOS 4.1 non-hacked. It is now Thursday 12:00pm and my phone has not completed the update, I tried to restore it and nothing. The status bar on the iPhone is stuck in the middle. It now has the iTunes logo and a connection logo on the screen. In iTunes, I get an error code that reads "1611". My phone was working fine before I tried to do the update. This iOS 4.2 killed my phone. What should I do? Get a new phone? Of course, thats probably what they want me to do. But, can it be fixed?

I know that this is kinda off topic, but I have a legit complaint about 4.2.1
I'm just upset with a bunch of other folks that my Photos App has inverted my Events. Now the new events are all the way on the bottom with no way to fix it.
Why the change??? Why mess this up???

Weren't laws passed YEARS ago that said carriers had to unlock phones after a certain period of time? Am I crazy? What happened to that?

This information isn't correct, as there are already iPhone 4 phones with 4.2.1 running with baseband 01.59 with no problems. The issue appears to be that the firmware installation process checks to make sure the baseband installs. However, if you already have a setup such as 4.1 with 01.59 (achieved with methods such as TinyUmbrella), you can use the Update process to update 4.1 to 4.2.1. Update differs from Restore in that your phone's memory isn't erased (apps, media, etc. remain in place, with no need to sync them back on to the phone). It also touches only the main firmware and not the baseband. Not all firmware updates allow for Update, but 4.1 to 4.2.1 does.