Awesome Techs

Now iPhone Dev team has confirmed that they will not be releasing any jailbreaks for iPhone OS v4.0.2. Now this is a bad news for all the people who have accidentally upgraded their OS version to 4.0.2.

But there is way by which we can downgrade our OS version to the previous version. ie., 4.0.1 for which jailbreak is still available.

This step by step guide will show you how to downgrade your iPhone

iOS 4.0.2 to iOS 4.0.1. These steps are pretty simple but there is one major requirement: you must have your SHSH files saved on Saurik’s server. There is absolutely no way around it. If you don’t have your SHSH, you won’t be able to downgrade your iPhone.

In this tutorial, we will see how to downgrade the iPhone from 4.0.2 to 4.0.1 but the steps are the same if you want to downgrade to iOS 4 or even 3.1.3.

There are several methods used to downgrade the iPhone. We will learn the method that uses TinyUmbrella. No file editing will be necessary.

How to Downgrade from iOS 4.0.2 to 4.0.1

Step 1: Let’s download your SHSH blobs from Saurik’s server to your computer. To do so, download TinyUmbrella and plug your iPhone in. Select the “Advanced Options” box. Also select the firmware version to which you wish to downgrade. Finally, select “Cydia” under “Request From”. Then hit “Save My SHSH”. This will grab your SHSH files from Saurik’s servers and save them on your computer.

Step 2: Download the firmware to which you wish to downgrade to from our iPhone downloads section. Save it to your desktop.

Step 3: Put your iPhone in DFU Mode. To do so, launch iTunes and plug your iPhone in. Press and hold the Home and Power button together for 10 seconds. After 10 seconds, release the Power button while still holding the Home button until iTunes pops up and says it has found an iPhone in recovery Mode.

Step 4: Run TinyUmbrellaand click the “Display SHSHs” button to make sure your SHSH blobs were downloaded to your computer. Once done, click “Start TSS Server”.

Step 5: Now we’re going to restore to the firmware you want. To do so, launch iTunes and plug your iPhone in. Hold to SHIFT key (Windows only) or ALT/Option key (Mac only) while clicking on Restore. Make sure you hold the key while clicking Restore. A window will open. Simply select the firmware you downloaded in step 2.

Step 6: Your iPhone will start the restore process. You will most likely get several errors (error 1011, 1013, and 1015) but that’s ok, don’t worry about those.

Step 7: Finally, we need to get your iPhone out of recovery mode. To do so, simply click “Kick Device Out of Recovery” in TinyUmbrella.

Done!

You should now be back on a previous iOS, giving you the ability to jailbreak and unlock.

Well first let me make it clear that, I am not using wine or any other syncing tools for Linux. I am actually using Virtual Box.

So First install the non GPL version of Virtual Boz in you linux. Then just install Windows Xp in this Virtual Box. You can read the article for setting up Virtual Box Here.

After setting up windows XP properly install itunes 8.2. You can download Itunes 8.2 from here.

Then Plugin your Ipod or Iphone to your system. Then for your guest to recognize the ipod/iphone you will have to make a change in the Virtual Box. In the virtual box guest window frame, You can see a USB icon. See the Pic below.

Right Click that icon and select the ipod/iphone Now If you open the itunes in The guest OS you will see the Ipod/Iphone is connected status.

Now if you need all the Music /  Video / Picture files to be accessed by from Windows XP, you need to create the shared folder in Virtual Box settings. For this select the Devices and Shared Folders from the top menu in the Guest Window. Then add the Muic/Video/Picture folder there.

Now for the ease of use, you can map these as network drives. For this Just right click on the “My Computer” in Windows XP and select Map Network Drive, and then browse to the shared “vboxsvr” folders. Also select a suitable Drive name. Now you can see you favorite media folders as Drives in your My Computer.

If you have done till this, you can just use the iTunes as you were using it in the Windows Machine.

Editing the boot menu in Grub version 2 is a little bit different compared to Grub version 1. The problem is Ubuntu Karmic 9.10 comes with Grub 2. That means a fresh install of Ubuntu 9.10 changes your old grub to version 2. And version 2 of Grub dont have menu.lst. Menu.lst is the file we have to edit if we want to change something permanently in the bootmenu.

Instead of menu.lst Grub V2 uses grub.cfg. The path normally is

/boot/grub/grub.cfg

NOTE: you can use the grub-mkconfig utility to generate a grub.cfg file for you. Other operating systems can be detected and will be added to the configuration only if os-prober is also installed. os-prober is currently only avaible in Debian and Ubuntu.

GRUB 2 uses new bashish scripting language that is used to build menus. At startup file grub.cfg will be read and executed.

Please note that partition numbering has been changed to start from 1 (in grub legacy it started from 0).

Example menu entrys can be found in docs/grub.cfg in the source or in the Debian/Ubuntu package in /usr/share/doc/grub-pc/examples/grub.cfg.

Here is an simple example:

# Timeout for menu
set timeout=10

# Set default boot entry as Entry 0
set default=0

# Entry 0 - Load Linux kernel
menuentry "My Linux Kernel on (hd0,1)" {
    set root=(hd0,1)
    linux /vmlinuz root=/dev/hda1
    initrd /initrd
}

# Entry 1 - Chainload another bootloader
menuentry "Chainload my OS" {
    set root=(hd0,3)
    chainloader +1
}

PS: The improper editing of the file grub.cfg can leave you with an unbootable system.

At the Mobile World Congress in Barcelona Google demonstrated a new prototype of the technology , which can translate the text from any given photo. Well Google Goggles is Google’s experimental Android visual search application.

Google’s Blog Post about this said,

You may wonder what’s happening in the background. On the simplest level, this prototype connects the phone’s camera to an optical character recognition (OCR) engine, recognizes the image as text and then translates that text into English with Google Translate.Right now this technology only works for German-to-English translations and it’s not yet ready for prime time. However, it shows a lot of promise for what the future might hold. Soon your phone will be able to translate signs, posters and other foreign text instantly into your language. Eventually, we’re hoping to build a version of Google Goggles that can translate between all of the 52 languages currently supported by Google Translate — bringing even more information to you on the go.

BBC News reported that, Microsoft has launched the latest iteration of its mobile phone operating system, called Windows phone 7 series.

The software has a redesigned user interface and incorporates many Microsoft services such as Xbox LIVE games and the Zune music service.

The software was introduced at an event at the Mobile World Congress in Barcelona.

BBC News Said.

The new version have lots of new features. Phone Windows 7 will have a completely new user interface that resembles that of the Zune. The software use a new interface called ‘live tiles’. But the sad news is it does not support Adobe Flash at the initial launch.

“Microsoft and Adobe are working closely together. While the newest version of Windows Phone won’t support Flash at initial availability, both companies are working to include a browser plug-in for the full Flash player in future versions of Windows Phone. More details will be shared at Microsoft MIX next month,”

Adobe said about the issue.