Step 1: Download iPhone 3.1.3 / iPhone 3.1.2 Original Firmwares from Here.
Step 2: Put your Device in DFU Mode.
Step 3: This step is for iPhone 3GS, iPod touch 3G and iPod touch 2G (MC model) Owners who saved SHSH on Cydia for the Firmware you downgraded to, If you are on iPhone 3G or iPod Touch 2G then Skip this step.

• Locate “C:\Windows\System32\drivers\etc\” for Windows and “/etc/” directory for Mac, then locate “hosts” file andOpen it in Notepad (for Windows) or TextEdit (for Mac OS X) and add this at the bottom of the file.

74.208.105.171 gs.apple.com

At last it will be like that, then save it.

Step 4: Now, You will have to restore your iPhone or iPod Touch to the firmware you have downloaded by Clicking on iPhone icon that appears in the left sidebar of iTunes then hold left “alt” button (“Shift” button on Windows) on the keyboard and then click on “Restore” then release the alt button, Now Select the firmware you have downloade din Step 1 and Let iTunes do some automated Steps. (Note: If you got some error, Just ignore it)
Step 5: You will need to Exit Recovery Mode, So Download RecBoot (Windows / Mac) and Click on “Exit Recovery Mode” and your Device will restart automatically.

What we need is some way of hiding these “monotasking” apps, so that they just don’t plain get in the way. Fortunately for jailbroken users, Cydia has a solution.Not so long ago MacStories came across Remove Recents, which is available for free in the Big Boss repository. This handy tweak prohibits non-optimized iPhone apps from jumping in the quick launch dock – and makes life a whole lot easier.

So if you’re a jailbroken iPhone 3GS or 4 user, head over to Cydia and check out Remove Recents. It’s probably going to make things a lot easier – at least until every app you need has the ability to multitask.

Problem #1. Depending on how you hold your iPhone 4 during calls you may or may not notice your reception drop.

This is how Apple explained it:

Gripping any mobile phone will result in some attenuation of its antenna performance, with certain places being worse than others depending on the placement of the antennas. This is a fact of life for every wireless phone.

SOLUTION : Use Apple’s Bumper case

Apple offers a $30 “Bumper” case which covers the edges of your iPhone 4—including those sneaky, evil antenna points—and protects it from reception issues and glass-shattering bumps.

Problem #2. The Display is defected, discolorations and strange lines.

No explanation from Apple so far!

SOLUTION : Get it replaced from Apple!

If you display has a problem, Apple will replace the phone!

You will need :

1. HTC Hero with a flashed recovery ROM. (Read more.)
2. A PC/Mac
3. Red Bull (Optional)

Files :

1. aHero06.zip
2. extra-4-aHero.zip
3. settings-ahero.zip

Instructions :

1. Download this ROM – aHero0.6 and copy it onto your SD Card.
2. Reboot your HTC Hero in Recovery Mode.
3. Run a NAND Backup.
4. Wipe All Data.
5. Flash the zip file that we copied namely – “aHero06.zip”.
6. Flash the zip file “settings-ahero.zip”.
7. Reboot the device and complete the initial setup.
8. Reboot again into recovery mode and flash the zip file “extra-4-aHero.zip”.
9. Reboot the phone.
10. Take Live wallpaper from wallpaper menu.
11. Select “NexusMod” and configure it to your choice.
12. Enjoy!

Thanks to Maxo for the awesome ROM and thanks to NexusMod.

Note. You may face issues while using the Live wallpaper as it was not meant to be used in a HTC Hero. I am not Responsible if you brick your phone!

You will need :
1. An android device with root access.
2. Mobile Network Connection (EDGE)
3. Wifi Tether/ aNetShare application in the phone.

Intructions :

1. Enable the mobile network from setting.
2. Open the Wifi Tether/ aNetShare app in your phone, and tap “Start tethering”.
3. Go to PC/Laptop and search for wireless networks, you will see you phone’s SSID.
4. Click connect.
5. Once connected open firefox.
6. Go to Tools > Options > Advanced Tab > Settings.
7. Select Manual proxy configuration and enter the proxy setting.
8. Click Ok.
9. Enjoy !!

Download These Files :

1. M68AP.plist
2. IMG_0011.MOV

Procedure to Activate Video Camera in iPhone 2G/3G OS 3.0 :

1. Download the M68AP.plist file to your desktop and connect your iPhone via SSH and navigate  to/System/Library/CoreServices/SpringBoard.app
2. Now find the M68AP.plist file and rename it to M68AP.bak.plist file and leave it on your iPhone, or yoou can also make a copy it to somewhere on your computer . Next copy the M68AP.plist file one you downloaded on your computer from the link given above into your iPhone.
3. Move the video (MOV format) you downloaded fro the link above to / var/mobile/Media/DCIM/100APPLE
4. Now respring your iPhone from SBSettings.
5. Start the camera and click the button at the bottom left to open CameraRoll. You’ll notice a new subdivision in “All Photos and Videos” and you can start the movie that you have previously uploaded.
6. Now you can select the area you are interested in and trim the movie.

To re-enable the still camera, you need to restore the original file M68AP.plist by deleting the M68AP.plist file you uploaded and then rename M68AP.bak.plist file again to M68AP.plist. Again respring your Springboard and your still camera will be activated.

There are some solutions that you can try to fix the problem:

Reboot iPhone

Perform a hard reboot of your iPhone, i.e turn your iPhone off completely, by pressing and holding the Sleep/Wake button (on top ) for a few seconds then slide the red slider. Turn it back on by holding the Sleep/Wake button until the Apple logo appears. This can clear potentially problematic data, preventing some type of crashes.

Delete the iPhone Application:

If the above solution does not help, try deleting the application from your iPhone and then re-sync it back to your iPhone.

To delete an application from your iPhone, simply press and hold on the application icon on your iPhone’s home screen until it begins to wiggle along with other application icons (just as you would to rearrange them). A small black circle with an “x” on it should appear on the top-left corner of the icon. Tap on the “x” of the iPhone app that is giving you trouble to uninstall it.

When thats done, sync your iPhone with iTunes which should result in the application you just deleted to get synced to your iPhone again.

Few iPhone users have observed that re-downloading the deleted application directly from iPhone’s App Store (rather than using iTunes on your computer) also helps in resolving the crashing problem.

Restore iPhone:

If deleting the application or full reboot does not resolve the crashing issue, try performing a restore of your iPhone. Connect it to your Mac or PC and, in iTunes, click the Restore button under the Summary tab. Please do remember restoring the phone will erase contacts, calendars, photos and other data on the phone, but will restore automatically backed-up information including text messages, notes, call history, contact favorites, sound settings, widget settings, etc.

Let us know which of the above solutions resolved your application crash issue. In case you have figured out some other way of solving this problem, please do share it with us in the comments section below for the benefit of fellow readers.

iPhone

The jailbreak has not been released yet, but you if you’ve got too much time on your hands you may be able to jailbreak if you try the following. If this works please share your results in the comments.

How to Jailbreak iPhone 3.1.2

1. Update to iPhone 3.1.2. After updating, find your iPhone 3.1.2 IPSW file or download it using any of the links below. Remember, don’t use Safari to download. Safari can’t download .IPSW files properly, use a different browser!

• iPhone 3.1.2 download (iPhone1,1_3.1.2_7D11_Restore.ipsw, 241 MB)
• iPhone 3G 3.1.2 download (iPhone1,2_3.1.2_7D11_Restore.ipsw, 242 MB)
• iPhone 3GS 3.1 download (iPhone2,1_3.1.2_7D11_Restore.ipsw, 306 MB)

2. Download redsn0w.

3. Follow the jailbreaking guide at the Jailbreak iPhone 3.1 post.

Unlock iPhone 3.1.2

It’s possible to unlock iPhone 3.1.2 but only if your baseband has not been updated to 05.11.07 or the newer baseband, you must create a custom firmware that uses the 04.26.08 baseband. The iPhone 3.1.2 update updates the baseband to a newer one that permanently blocks the software unlock. A guide on how to unlock iPhone 3.1.2 will be up once a jailbreak tool is released.

• Reset your iPhone by holding down the sleep and home buttons until the Apple logo appears.
• Restore your iPhone: In iTunes, click the Restore button under the Summary tab. Restoring the phone will erase contacts, calendars, photos, and other data on the phone, but will restore automatically backed-up information including text messages, notes, call history, contact favorites, sound settings, widget settings, etc. Of course, make sure that you back up your phone before restoring.

However, some issues–chronicled below–persist:

Podcasts are listed in random order for some users who are reporting that podcast episodes are not being displayed properly by date. We encountered this problem in one out of seven podcasts on a test iPhone 3GS. This bug has been confirmed by Apple, so look for a fix in a future firmware update.

Random freezes or shutdowns are a major complaint for users after upgrading. The problem is the source of heated discussions within a huge Apple discussion threadcontaining nearly 900 posts. The problem seems to manifest itself whenever the iPhone goes to sleep, the user locks the display, or just randomly. When the user next tries to use the phone, he or she will find it completely unresponsive–the display remains blank and pressing buttons won’t wake it. The only recourse for the user is to perform a reset as described above.

Battery life is another major complaint for users after upgrading and one we’ve encountered ourselves. So far, none of the usual fixes have resolved a problem some are claiming happens even when the iPhone is idle. Regardless, we’ve noticed on our own iPhone 3GS that battery life is significantly poorer after upgrading to iPhone OS 3.1. It isn’t unusual to commute home at the end of the day with 25 percent or less battery life.

Apple is clearly aware of the battery problem and is actively trying to resolve it by engaging iPhone users in a study. Participating users will receive a specialBatteryLifeLogging.mobilecongfig file that will capture Powerlog files from the iPhone when syncing with iTunes. The user sends the log files to Apple via e-mail orhttp://bugreport.apple.com. Hopefully with enough input, Apple will find the root cause of this problem and issue a fix in a future firmware update.

In the meantime, we suggest that you look at our guide to getting the most out of your iPhone battery for suggestions on improving battery life.

Slow or sluggish performance is a complaint from some users, blaming the problem on MobileMe syncing. According to a post by Skid on the Apple forums, you can resolve the issue by performing these steps:

1. Launch the Settings App
2. Go to Mail, Contacts, Calendars
3. Go to your MobileMe account
4. Turn off contacts and calendars
5. When prompted, delete them from your iPhone
6. Reset your iPhone by holding down the sleep and home buttons until the Apple logo appears.
7. Perform steps 1-5, but this time turn contacts and calendar syncing on.

If the above steps do not resolve the problem, another alternative is to delete your MobileMe account from your iPhone, perform a reset, and set up your MobileMe account from scratch.

Unknown error (-50) was an error we encountered when syncing from iPhoto to our iPhone 3GS on another computer. According to Apple, all we needed to do was sync using iTunes 9, which we had not installed on the second computer. After upgrading to iTunes 9 the problem disappeared.

A problem with Exchange is a source of complaints about the OS 3.1 upgrade manifested by 2G and 3G iPhone models failing to connect to Exchange 2007. Details about the issue can be found in the article, “Apple explains iPhone OS 3.1 Exchange changes.”

Bricked iPhones caused by the OS 3.1 upgrade failing to apply was a source of complaints by some unhappy iPhone users. Fortunately, there is a fix for most “bricking” incidents: take the following steps to do a factory restore of your iPhone:

1. Press and hold Sleep/Wake and Home until the iPhone resets.
2. When the Apple logo appears release Sleep/Wake, but do not release Home until you see the prompt to connect the iPhone to iTunes.
3. Connect your iPhone to its USB sync cable.
4. iTunes should launch. If it doesn’t, launch it manually.
5. Perform a restore of your iPhone’s firmware, settings, apps, and media.

If the above fixes don’t help with your OS 3.1 issue, consider following the Apple iPhone Troubleshooting Assistant before investing your time in calling AppleCare or visiting the local Genius Bar.

Tell us about your iPhone OS 3.1 upgrade problems in the comments.

Step 1: To downgrade your baseband from 05.11.07 to 04.26.08, you must first jailbreak your iPhone 3G running firmware 3.1 by following the step-by-step guide posted here.

Step 2: After you have jailbroken your iPhone, Go to “Cydia” on your iPhone and Search for “Fuzzyband” and then install this application.

Step 3: Start “Fuzzyband” app and touch on “Downgrade” button to downgrade your Baseband from 05.11.07 to 04.26.08.

Step 4: You should now be able to perfectly unlock your iPhone 3G using the latest version of ultrasn0w by following the step-by-step guide posted here.

NOTE: Downgrading of baseband will only work on phones that have the 05.08 (5.8) Bootloader from the factory. If you do not know your bootloader then you can run Fuzzyband and it will report the version number for you.