Note: Make sure you have taken a back-up of your iPhone before you upgrade. There are a few known issues with the 3.0 beta – 1. Maps doesn’t work for some people, 2. Syncing takes a lot of time, 3. lots of UI issues with 3rd party apps…  

Steps to upgrade:

1. Sign up as an iPhone developer on http://developer.apple.com/ (you need to pay 99$/year for registration fees)

2. Apple takes about 24 hours to upgrade your status. Once done you will receive an activation code in  your email.

3. Download the iPhone SDK and iPhone OS 3.0 DMG files from their website.

4. Install the iPhone SDK. Run X-Code and find organizer window.

5. Plug in your iPhone and it should be detected in the in the organizer window. 

6. Open the iPhone OS 3.0 DMG file with IPSW image.

7. Click on your iPhone detected in the organizer window.

8. Click on the label which displays the current software version of the iPhone. Select other version and browse to the new DMG with IPSW image.

9. Press Restore. Once the upgrade is done, iPhone will automatically reboot and appear in iTunes.

http://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=284815942&mt=8

The new iPhone firmware 2.x doesn’t allow users to edit the APN for some carriers. In the new iPhone 2.0 Apple gave service providers the ability to disable this setting so you’ll automatically connect to the Internet through their network and incur their data access fees. What this also means is that you wont be able to edit the APN if its set to something else and you wont be able to access the Internet on their network until you change the APN. This means even if you have an officially unlocked iPhone, you can’t access Internet if you are on the network of service providers who don’t allow editing the APN setting.

So editing APN is useful in both scenarios 1. Those who want to change the APN to be able to access Internet 2. Those who want to change the APN value to some random string to avoid the hefty data charges.

Generally APN can be easily edited by going to Settings>General>Network>Cellular Data Network. Here’s the official guide to view/edit APN settings for the carriers who do allow editing.

For those who don’t allow editing – there are 2 ways to do it:

1. For those who have officially unlocked iPhone (Not Jailbroken): This is for people who have an officially unlocked iPhone (from Hong Kong, Singapore, Europe etc…) traveling to other countries and using a local sim on their unlocked iPhone. This is for users like me – I recently travelled to India (Bombay), i was using a local Vodafone sim card and wanted to change the APN so that i could use the Internet on my iPhone. Since my iPhone didn’t allow me to do so, i contacted the vodafone customer service and they were extremely clueless about the APN stuff – instead they advised me to get on a more expensive Internet data plan when i was already on a basic data plan. Knowing how clueless they were it was pointless to expect any help from them. Finally I figured out a way myself -

1. Download and Install the iPhone Configuration Web Utility 1.0 for Windows (Mac version also available here) – This is basically for the enterprise customers to help them deploy configurations within their organization.
2. After installation, open your web browser and access http://localhost:3000/ (Mac users – refer the guide)
3. Enter Username/Password – admin/admin
4. On the General tab – Edit Name, Identifier and Organization
5. Click on Advanced tab – Edit the Access Point Name (APN)
6. Back on the General tab click on Export Profile and save the configuration profile as a file
7. Email yourself the configuration file as an attachment and open it on your iPhone
8. Once you click on the attachment on iPhone it will prompt you about making configuration changes and warn you about no trusted signature, just click continue
9. Once installed you will be able to access Internet if you entered proper APN string in step 5 or you wont be able to access Internet if your purpose was to disable Internet and you entered a random string in step 5.

2. For those who have unlocked/jailbroken iPhone: All you need to do is SSH to your phone and edit the carrier.plist file in /System/Library/Carrier Bundles/<YourCarrier>. (Example – in my case it was ../Carrier Bundles/Vodafone_in.bundle). Add the following:

<key>AllowEDGEEditing</key>
<true/>

just after

<?xml version=”1.0″ encoding=”UTF-8″?>
<!DOCTYPE plist PUBLIC “-//Apple Computer//DTD PLIST 1.0//EN” “http://www.apple.com/DTDs/PropertyList-1.0.dtd”>
<plist version=”1.0″>
<dict>

once done -you should be able to edit the APN on the iPhone by going to Settings>General>Network>Cellular Data Network.

For more help on edting .plist refer to the forums.

Watch live T-Mobile G1 press conference – New York – Sept 23, 2008.

http://announcement.t-mobileg1.com/

Liveblog on techcrunch and more information from engadget – http://www.engadget.com/2008/09/22/meet-the-t-mobile-g1/

UPDATE: Live event just got over. Content, phone details and on-demand version of the press conference will be available on the website soon.

Some important details:

• G1 phone is priced at $179
• Out on October 22
• Google maps with street view and compass mode – scene moves as you move around.
• Android Marketplace – download games and apps
• SIM-locked to T-Mobile
• Plans – $25 for unlimited web and some messaging. $35 unlimited everything

iPhone-dev team released the QuickPwn2.1 tool for windows last week which works like a breeze and the UI makes it extremely simple to use. It unlocks iPhone 2G and jailbreaks iPhone 3G.

Surprisingly, the new 2.1 firmware upgrade doesn’t re-lock the iPhone. So, if you have an already unlocked/jailbroken iPhone running 2.0 or 2.0.x, just go ahead and upgrade using itunes 8 – it wont lock your phone again. (tested on 2.0, 2.0.1, 2.0.2)

more from the dev-teams blog:

Window QuickPwn 2.1

Supports 2.1 firmware with the unlocking and jailbreaking of iPhone 1st generation (2G) device. Supports the jailbreaking of iPod Touch 1st generation device and iPhone 3G. Your device will need to be upgraded to 2.1 (using iTunes 8 ) before running this application.

• It does NOT support the unlocking of iPhone 3G
• It does NOT support the jailbreaking of second generation iPod Touch introduced last week

• Windows QuickPwn 2.1 - Torrent here
• (SHA1) QuickPwn21-1.zip = f8124d0e8f31f64ef3272de8fbc679e1dd1f93a7

You will need to know how to use bittorrent to download this file.

Mirror owners should email blog@iphone-dev.com with direct hosted zipfile links (with the correct MIME type). RapidShare or other file distribution services are not needed thanks. Links will be added to this post soon.

iPhoneDev team released the pwnage tool 2.0 on Sunday, they already have a update to that. The new ver. 2.0.1 fixes the following issues:

• It auto-finds the bl39 and bl46 files better, if they’re on your computer
• It creates the ~/Library/iTunes/Device Support/ folder if not present, which should help with some 1600 errors people have been having.
• Many people have reported the PwnageTool not starting up at all (the icon never stops bouncing). This issue should be resolved now.
• The Sparkle AppCast URL is fixed in this version, so automatic updates should work for future releases.

Note from the dev team:

Because of the AppCast URL fix, we recommend that everyone who downloaded PwnageTool 2.0 get this version, if they want to stay up to date automatically.
N.B: if PwnageTool 2.0 pwned your phone correctly the first time, you do not need to pwn again with 2.0.1.

Direct download link: http://thebigboss.org/repofiles/nonrepo/PwnageTool_2.0.1.zip

SHA1 10b6c7dc22286e7b70c3d5a92cda7d117426fda9.

Source: http://blog.iphone-dev.org/post/42931306/pwnagetool-2-0-1

Step 1: Use WinPWN 1.0 To PWN Your 1.1.4 iPhone. If you need WinPWN Get it: http://www.winpwn.com/files/winpwn_1.0.0.3_RC1_Setup.zip

Step 2: Install BootNeuter (Available Via Installer).

Step 3: Run BootNeuter and have it Neuter your iphone

Step 4: Make sure your iTunes version is at 7.7

Step 5: Grab a pre-created IPSW Made with PWNAGE 2.0 Mac. If you don’t have one made you can grab one here:

http://thepiratebay.org/tor/4305453/iThor__s_iPhone_2.0_Custom_Firmware_Vanilla_(5A347)

Step 6: Grab ZiPhone (Yes its Crap But hey it will get us into recovery mode) (http://download.ziphone.org)

Step 7: Run Ziphone & Jump your iPhone into NORMAL Recovery mode (available via advanced settings area in Ziphone) — This is the most straightforward way to get it into the proper restore mode

Step 8: In iTunes Shift+Click the Restore button and find your custom IPSW Firmware file.

Step 9: The restore occurs (You should see a crazy pineapple while its running on your iphone). Then you should see bootneuter automatically come up (this is pwnage unlocking, activating and jail breaking your iphone).

NOTE: DFU Mode did NOT work for me so to be safe stick with normal restore mode.

IRC Server – irc.iunlocked.org

Another simple guide available here – http://sleepers.net/news/2008/07/20/pwnage-option-for-windows-users/

Mac Users – http://sleepers.net/news/guides/pwnage-20-guide/

NOTE: THIS WILL NOT UNLOCK iPHONE3G.

Here are the steps for a successful 2.0 to 1.1.4 downgrade for those of you that updated to 2.0 and realized what a mistake it was. (Thanks goes to Geeb for finding the iTunes 7.5 solution, Thanks goes to Crumpx for the pwnage method). Note that this has been performed on a PC.

Ok, so you updated to iTunes 7.7 and then installed 2.0 and you’re stuck. Here are the steps to downgrade to 1.1.4. Note that the result of this guide will be that you will be back to 1.1.4 version of firmware with baseband of 2.0 (4.05.04_G).

1) The first problem in your downgrade is that you probably are getting error 20 in restore mode and error 160x in DFU mode. This is due to iTunes 7.7.  So, you now you need to uninstall iTunes 7.7 and install iTunes 7.5. Make sure after your iTunes 7.7 uninstall you reboot your pc as it requests you to. **OSX users, see note at bottom of page to downgrade your iTunes.

2) Now that you have  iTunes 7.5, you will still have the DFU driver for 7.7. This is good and will allow the process to work. Put your phone into DFU mode using the DFU steps.

3) Restore using iTunes 7.5. You will get an error like 1011, 1013, 1015. This is normal and expected. An error 1601, 1602, 1600 or anything else is not ok.

4) Once you get error above, leave iTunes open and kick your phone out of restore mode. I recommend just loading winpwn(PC) or pwnage(MAC) and pwning the device at this point. If pwnage fails to work, you need to restore your phone again. You should be able to use normal restore mode, however. Other ways to kick out of restore mode may be ibrickr, jailbreak 1.1.2 (boot phone), iLiberty+.

5) Once completed, you have a pwned device with baseband 4.05.04_G from firmware v2.0.

6) To get back to 04.04.05_G (1.1.4 baseband) load bootneuter. If you don’t have this, install it from installer. Run bootneuter with Neuter, 4.6, and unlock. When it’s done, you will have an unlocked 04.04.05_G right back where you started.

Note: if you get  a boot neuter error like 05, 02 or such, you probably have more steps. Unfortunately, there is no safe answer to this one.The only method I know of to do this is to use a patched version of Ziphone as described here. Before you do this, you should know the risks. Read my Ziphone warning here. Your other option is to just wait for dev teams pwnage v2.0. Direct download link for pc and mac: http://iphone-freak.com/en/page1/page1.html

Note for OSX users:
If you are on OSX and want to attempt to downgrade your iTunes, you can try these steps:

Load up Terminal and type the following:
killall iTunesHelper
sudo -s
rm -r /Applications/iTunes.app
rm -r /Library/Receipts/iTunesX.pkg
rm  ~/Library/Preferences/com.apple.iTunes*
rm -r /Applications/iTunes.app
rm -r /Library/Receipts/iTunesX.pkg
rm  ~/Library/Preferences/com.apple.iTunes*
rm -r /System/Library/PrivateFrameworks/MobileDevice.framework

Troubleshooting:
Some of you have reported “I am in DFU mode and keep getting error 20 from iTunes restore”. Answer, you are not in DFU mode. Follow the guide and the DFU link. An iPhone in DFU mode has no image on the screen and looks powered down.

Some of you are reporting error 160x (1600, 1601, 1602, 1604 etc) on the iTunes downgrade while in DFU mode. I suggest trying another PC. You may still have some residual files left over from the 7.7 install. Make sure you are in iTunes 7.5 with drivers from 7.7.

Source: http://sleepers.net/news/?page_id=216