Downgrade iOS 4.1 to 4.0 on iPhone

Downgrade iOS 4.1 to 4.0 on iPhone

Now that you have already upgraded to iOS 4.1. Now you want test some app on 4.0 or some feature is working in 4.0 and not in 4.0 . So here is the Method

Stuff you will need

  1. iTunes 9.2 (latest iTunes
  2. iOS 4.0 Firmware
  3. iRecovery (Mac)
  4. LibUSB Library Package (Mac)

Downgrade iOS  4.1 OS to 4.0 on iPhone 4, 3G & 3GS

1. Download iOS 4.0 firmware file.

2. Connect iPhone to computer

3. Now Start iTunes 9.2 and Windows (Alt Key+ Click Restore) Mac (Hold Option + Click Restore), Now manually select iOS 4.0 firmware.

4. During the restore process you will get an 1015 error. Don’t worry, that’s normal. Just click on Ok and close iTunes.

5. Now open terminal on Mac/ Command Prompt on Windows and type following commands

cd Desktop

. / iRecovery -s

setenv auto-boot true




Now unplug your iPhone and turn it off by pressing the home+power button

Once it is off, turn it on by pressing the power button. Plug-in your iPhone and load iTunes to continue with the activation

That’s it we have successfully downgraded iOS 4.1 to 4.0 on iPhone


VirtualHostX- Creating virtual host on mac


Create MAMP and Apache virtual hosts on your Mac

VirtualHostX 2.0 is the easiest way to host multiple websites on your Mac. It’s the perfect solution for web designers working on more than one project at a time. (Aren’t we all?) No more nesting folders or asking the programmer across the cubicle for help. With VirtualHostX you can easily create and manage Apache virtual hosts with just a few clicks. Download today!

Version 2.0 is more than just a new logo. Now VirtualHostX offers finer-grained control over your Apache settings, and works with MAMP, XAMPP, and Apple’s built-in web server. It even lets you share your virtual hosts with other users on your local network.

Version 2.0 is more than just a new logo. Now VirtualHostX offers finer-grained control over your Apache settings, and works with MAMP, XAMPP, and Apple’s built-in web server. It even lets you share your virtual hosts with other users on your local network.


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Abyss Web Server

Abyss Web Server enables you to host your Web sites on your computer.
It supports secure SSL/TLS connections (HTTPS) as well as a wide range of Web technologies.
It can also run advanced PHP, Perl, Python, ASP, ASP.NET, and Ruby on Rails Web applications which can be backed by databases such as MySQL, SQLite, MS SQL Server, MS Access, or Oracle.

Abyss Web Server enables you to host your Web sites on your computer.
It supports secure SSL/TLS connections (HTTPS) as well as a wide range of Web technologies.
It can also run advanced PHP, Perl, Python, ASP, ASP.NET, and Ruby on Rails Web applications which can be backed by databases such as MySQL, SQLite, MS SQL Server, MS Access, or Oracle.

Abyss Web Server Features:

Compact, easy to use and fully compliant to standards

Abyss Web Server is a compact web server available for Windows, MacOS X, Linux and FreeBSD operating systems.

Low requirements for great performance

Abyss Web Server does not require huge memory or excessive computing power to run. That’s why it can be used without problems even on small or out-dated systems. It performs at least as well as the common web servers available on the market.

Easy configuration

An intuitive web management interface called the console makes the web server configuration as easy as browsing a web site. No need to edit configuration files, the console helps you setting the server parameters in an effortless manner and can be accessed from a local or a remote computer. It is available in many languages such as English, French, Arabic, Chinese, and Spanish.

Fault-tolerant and robust

Abyss Web Server is based on the APX architecture. APX (which stands for Anti-crash Protection eXtension) was created, here at Aprelium, to make the server crash-proof. If it happens that the software causes a critical error and crashes (which is by the way very improbable), a report will be generated if possible and the server is automatically restarted. The downtime in such a case won’t exceed 1 second!


Security is the #1 priority in Abyss Web Server. In addition to its advanced URL decoding engine which rejects malicious and suspicious requests, it features an efficient anti-hacking system which detects at an early stage hacking attempts or denial of service attacks and bans dynamically their originating IP addresses.

It is also equipped with an anti-leeching system to automatically prevent other web sites from directly linking to your images or files.

XSSI support

Abyss Web Server supports the standard eXtended Server Side Includes directives to help you create dynamic HTML pages with the least effort and without requiring the use of a scripting language. Advanced directives such as #if, #elif, #else, #endif, and #set are available to enable flow control as well as variables setting and substitution constructs.

On-the-fly HTTP compression

Abyss Web Server supports the automatic compression of its responses when it dialogs with modern browsers which understand HTTP compression. This contributes to the reduction of bandwidth consumption and makes your sites load faster for most of your visitors.

Unicode compliant

Abyss Web Server supports file names and URLs written in any human language.

Runs your ASP.NET applications

Abyss Web Server features a native support for ASP.NET 1.1, 2.0, and 3.5 on Windows NT/2000/XP/2003/Vista/Home Server/2008. You can install your ASP.NET applications and ASPX files and start serving them immediately with no performance loss and no incompatibilities issues.

Abyss Web Server’s ASP.NET support is not limited in anyway and can execute small test scripts written in C# or VB.NET as well as large applications which use the advanced capabilities of ASP.NET such as custom web controls, database access, authentication, web services and XML processing.

Powers your Ruby on Rails applications

Abyss Web Server can run Web applications based on the Ruby on Rails framework. Their execution speed will be optimal thanks to the use of the FastCGI interface.

Installing Ruby on Rails has also been made easy on Abyss Web Server: clear instructions and full Ruby + Ruby on Rails packages are provided to make deployment of the framework quick and straightforward.

Hosts your PHP, Perl, and “Classic” ASP scripts

Abyss Web Server has been specially designed to make using scripts the simplest possible even on Windows platforms. Thanks to its CGI and ISAPI extensions interfaces, Abyss Web Server supports various scripting languages such as PHP, Perl, “Classic” ASP, Python, Ruby, Rebol, and TCL.

Languages which interpreters are FastCGI-compatible (such as PHP) will even experience a significant processing speed boost on Abyss Web Server while reducing in the same time your system load.

Whether you are going to test a simple script or install and run a complex database-driven web application, Abyss Web Server is the best choice in terms of ease of configuration and optimal performance.

Total control over the bandwidth

You can configure the total bandwidth that Abyss Web Server is allowed to use when answering the requests. You can also configure the bandwidth that is allowed for every visitor.

Finer bandwidth control is also available in Abyss Web Server X2 and can be used to configure the allowed bandwidth per file, per directory, or per group of files or directories.

Password protection

Password protecting files or directories has never been easier. You can define users and groups of users and create advanced access rules with a few clicks.

Custom directory listings

With Abyss Web Server, you have a total control over the layout and the look and feel of your directory listings. You can define a template using simple SSI directives or you can write in your preferred programming language your custom directory listing script.

Virtual hosting

Abyss Web Server can serve more than one web site from the same computer. This is often called virtual hosting or support for multiple hosts. Each defined host has its specific configuration and is completely independent from other hosts. Virtual hosting is only available in the professional edition Abyss Web Server X2.

SSL/TLS support (HTTPS – Secure connections)

Abyss Web Server supports the SSL and TLS protocols and is able to accept secure connections with strong cryptography (up to 256-bit keys) to protect your visitors’ sensitive data from flowing in clear form over the Internet. SSL/TLS support enables you to host E-commerce sites and accept credit card data with the highest level of security available in today’s industry standards.

Comprehensible SSL certificates management interface

Declaring, self-signing, and requesting SSL certificates has never been easier. With Abyss Web Server, you have not to use external tools and type lengthy commands to generate keys, certificates, and CSRs. Every task related to SSL certificates can be carried out using the console (the remote Web configuration interface).

Easy dual hosts (HTTP+HTTPS) setup

Have you ever wondered how to have the same site available with http:// and https:// URLs at the same time? With Abyss Web Server, such a setup only requires an extra click when declaring your host. You can even configure it to serve some parts of the site (for example login protected areas) only with https://. In such a case, Abyss Web Server will handle automatically the redirection from the http:// to the https:// URL. Dual hosts support is only available in the professional edition Abyss Web Server X2.

URL Rewriting

Abyss Web Server includes a URL rewriting engine conforming to industry standards. It can help you hide the complex URLs of your Web applications and make them look more user friendly.

Although URL rewriting is usually considered as an advanced feature, it remains easily controllable in Abyss Web Server through the comprehensible user interface of the console.

Starts when your computer boots up

Abyss Web Server can be configured to act as a Windows System Service, MacOS X Startup Item, or Linux/FreeBSD daemon. In such a case, you do not have to start it manually. It will be automatically launched immediately after your computer startup, even though no user is logged in, and will operate in the background.

You do not need to be a system wizard to make Abyss Web Server operate in this mode. A few clicks (on Windows and MacOS X) on a comprehensible dialog window are sufficient

How to monitor your Internet bandwidth usage in OS X, redux

  1. To get started, download and install SurplusMeter.
  2. Launch it from your Applications folder. The main interface will appear, and you’ll need to make a few adjustments before you’re done. First, select the Connection type: – as the default is PPP modem, and hopefully you have broadband via yourEthernet port or Airport wireless.Because SurplusMeter was actually created with the idea of tracking exactly how much you use the Internet, you can even set a Month starts on date (ie. the first day of your billing cycle) – since that’s how most ISP’s who limit your bandwidth will monitor it. If you don’t actually have a “set in stone” download limit, you can ignore the Download limit: setting, but you may want to make it higher than the 3GB that it defaults to. I set it to 500GB.

    monitor os x bandwidth with surplusmeter

    3) And once the Connection type: change is made, you’ll see your total downloads/uploads since SurplusMeter was installed. Click the green button in the upper-left corner.

    monitor os x bandwidth with surplusmeter

    1. SurplusMeter will go into ‘mini-mode’. You can also quit SurplusMeter entirely, and it will still keep track of your usage. When installed, it actually puts a small program in your start-up items, and it’s that program that really does the monitoring.
    2. monitor os x bandwidth with surplusmeter

    3. If you open your System Preferences, select Accounts and then when your account is highlighted, click Login Items, you’ll notice that SurplusMeterAgenthas been added to your start-up items. SurplusMeterAgent is what tracks your usage.
    4. monitor os x bandwidth with surplusmeter
      click to enlarge

    5. Tip: if you do use Ethernet or Airport, and transfer files across your local network– use the Pause Monitoring button. That will stop SurplusMeter from ‘tracking’ your usage until you un-pause again (and it does track local-network traffic the same way it does Internet bandwidth, which could artificially inflate your usage stats if you don’t use the Pause button).

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How To Create Bootable Windows 7, Vista, or XP USB Flash

Now you can create Windows 7, Vista, or the old XP bootable USB key with a few click

Requirements to create bootable Windows USB:

# Windows 7 or Vista ISO Or DVD

# Pen drive with 4GB+ (1 GB is sufficient for XP)


1. Insert your USB flash/pen drive to your system and backup all the data from the USB as your USB drive will be formatted during the process.

2. Now download WinToFlash tool (free) from here.

3. Run the tool, and browse to your Windows 7, Vista, or XP DVD files (make sure that your USB drive letter is correct)


4. Click Create button to begin the bootable USB process. Wait for few minutes to see the bootable USB

5. That’s all!

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Resetting Gnome’s Settings in Ubuntu

One of the great things about Linux is how easy it is to customize. Now unfortunately if you don’t know what you’re doing and sometimes even if you do know what you’re doing, you can get into trouble.

I found this method to be very useful in times of stress. As you all may know everything in Linux is a file, all of the settings are files. Inside your Home folder is where all of the settings and user specific files are located. Remove these folders to reset Ubuntu/Gnome back to its default.

If you don’t have access to your graphical (GUI) desktop to delete these folders in Nautilus or you’re just stuck at the login screen, drop into command-line by pressing CTRL + ALT + F1, login to your account, and run this command:

rm -rf .gnome .gnome2 .gconf .gconfd .metacity

Return to your GUI desktop by pressing CTRL + ALT + F7

Now you should be back to normal.

Please note this will only reset Gnome-specific settings. If you are having issues with your video card, x-server, etc., this WILL NOT fix those issues

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Presenting squid-deb-proxy! Speed up your update downloads

Are you like me and have multiple Ubuntu machines under one roof? Are you tired of downloading the same update multiple times? Sick of what seems to be duplicate work? Let me introduce you to my little friend… squid-deb-proxy.

Squid-deb-proxy is a new package for Ubuntu 10.04, and it’s designed to make your life easier and allow faster updates if you manage more than one Ubuntu machine. Conceptually, squid-deb-proxy consists of two pieces, a client and a server. The server package is “squid-deb-proxy” and the client package is “squid-deb-proxy-client”. The “squid-deb-proxy” server package is basically a squid caching server, with an out-of-the box configuration that allows it to cache .deb packages and make them accessible to the local area network. The “squid-deb-proxy-client” package is basically an include file to your standard apt configuration that makes apt aware of the squid-deb-proxy.

To install the server, simply “sudo apt-get install squid-deb-proxy avahi-tools” on the machine that you wish the server to be on. This will install the squid caching server and the avahi (Bonjour) auto-configuration network utilities, and start both servers, so your new caching squid proxy will start broadcasting its availability on your network. Then, a “sudo apt-get install squid-deb-proxy-client” on each Ubuntu 10.04 machine (including the squid-deb-proxy server) will install the apt configuration. You’ll want to install the client on the server as well, so whenever the server downloads updates those updates get cached by the squid proxy. This will also allow the server to install already-fetched updates via the proxy.

Once this is done, squid-deb-proxy is transparent to the user. Each machine’s apt program will look on the network for a squid-deb-proxy, and if it finds one, it’ll pass its requests through that. The proxy will cache any .deb packages that come through it, and make them available for the next update client that needs them. The second client to request these same updates will pull them down from the squid proxy, rather than having to get them from the Internet. You get the benefit of a local repository without the hassle of setting one up!

The beautiful part about the squid-deb-proxy solution is that it is completely transparent. If you have the squid-deb-proxy client installed on your laptop and you choose to download an update while on a business trip, your laptop will grab the updates from the main repository in your sources.list file, since the proxy isn’t on that local area network, broadcasting its services via avahi. There’s no need to modify your sources.list in any way, because apt becomes proxy-aware automagically. It’s really cool stuff.