WiFi Grayed Out or No WiFi Bar

After updating my iPhone 3G to 4.2.1, 2-3 week later I found no Wifi bar (greyed WiFi) on my iPhone.

First, I tried to reset network settings on iPhone. Go to Settings -> General -> Network -> Reset -> Reset Network Settings. This worked for temporary only, then greyed WiFI appears again.

Because there’s still no Wi-Fi Address, then I continued to Step Two.

iPhone stuck on “Slide for Emergency” and “Connect to iTunes” screen

If you found this problem, just simply connect the iPhone to iTunes to start activation. But you should have official SIM card that come along with the iPhone. When you connect the iPhone to iTunes with unofficial SIM card inside, iTunes will say: “The SIM card inserted in this iPhone does not appear to be supported.”.

TO solve this problem, you need an official SIM card to activate your iPhone. If you don have one, you should jailbreak to activate your iphone.

How to: Internet on iPhone through USB. No WIFI. No EDGE.

This will not work if you iPhone is not Jailbroken. You must have SSH already installed.

Before you begin, make sure your iPhone is connected with your 30pin USB to your computer(Computer must have connection to internet),
and that SSH is turned on, and make sure EDGE is turned on.

Free GPS Navigation for iPhone without help of Wi-Fi or 3G Data Plan

The Google map application that comes with theiPhone and iPhone 4 uses the GPS that is built in the iPhone to locate your position on earth while the maps themselves are downloaded from on Google map server. Therefore, wifi or an iPhone Data plan is required in order for the GPS to function because the maps need to be downloaded and updated online.

Turning off the Cellular Data connection on your iPhone.

On iOS 3 or older, I used APN disabler  to turn off cellular data. While on iOS 4 lets you turn off the Cellular Data connection on your iPhone without installing APN disabler.

You can adjust this setting from Settings > General > Network:

How to Downgrade Baseband 5.15.04 with Fuzzyband 4.1

Note: This tutorial works only for iPhone 3G.

Did you upgrade to iOS 4.2 and found out that your baseband is on version 5.15.04? Currently, there is no software unlock available.

Fuzzyband version 4.1 is out on Cydia. It will downgrade baseband version 5.15.04 to 5.13.04 for Ultrasn0w.

However, this only works for iPhone 3G with bootloader version 5.08.

How to downgrade your baseband from 5.15.04 to 5.13.04:

Save iPhone SHSH Files before TOO LATE!

Why??

For those who don’t know what’s this for.. Apple has added a new security system called ECID. The Exclusive Chip ID or ECID, is an identifier unique to every unit. ECID looks like this: 00000XXXXXXXXXXX (hex). Please be aware that some tools display the ECID in decimal format. iPhone 3GS, iPod Touch 3G, iPod Touch 2G MC and almost every upcoming iDevice is affected by this security.

Saving SHSH Blob iPhone 4 Firmware 4.3.3 (8J2) using iFaith v.1.0

Every iDevice has an SHSH blob, which identifies it to the world. After frustrating by too-late saving SHSH blob using TinyUmbrella, luckily I found iFaith. Tools like TinyUmbrella and Cydia are already good at saving latest firmware SHSH blobs. iFaith, however,

TinyUmbrella: THERE IS NO WAY FOR YOU TO GET THEM. SORRY. YOU ARE JUST TOO LATE.

After upgrading iOS 4.3.3, then, I just realized how important to save my SHSH blob in order to restore back (in the future) to the latest firmware available.  TinyUmbrella has capabilities to save SHSH blob file. However,

How to Jailbreak Your iPhone With JailbreakMe 2.0 ‘star’

I used JailbreakMe.com, the most easiest jailbreak tool  to jailbreak my iPhone 3G iOS 3.1.3 BB 05.12.01. After about 20 minutes process, Cydia appear on the Springboard alongside other apps.  I now free to download unapproved apps and tweaks not officially approved by Apple.