Whited00r 5.1 or iOS 5.1 for ipod touch 2g, ipod touch 1g and iphone 3g is available for download. Follow the step by step tutorial to install it on your old-generation iOS device

1. Install iOS 5.1 on iPod touch
2G
Credit: iOS Blog

2. Whited00r 5.1
 Apple, a Cupertino based Smartphone
manufacturing company, which is also
known for its product like iPhone, iPod
touch and iPad, has recently released iOS 5.1
beta version to the developers.
 If you’re reading this document, it means
that you’re well aware what Apple is.

3.  ARM based devices and previous version of
iOS devices like iPod touch 2G, iPod touch
1G, iPhone 2G, iPhone 3G were uncapable of
running iOS 4.0 and higher firmware.
 The reason behind is simple due to
advancement in technology.

4.  These devices are running on an outdated
hardware which can not run newer
firmware.
 Apple had withdrew the support of such
old-generation device, since the
performance was significantly hampered
due to powerful firmware.

5.  It is inevitable and people are understood to
adopt to new technology.
 However, there are still millions, if not
billions, of people who are still using those
old generation device.
 They can not take advantage of recent
technology like multitasking, folders,
advanced safari browser and the list goes
on.

6.  In such situation, a well-known developer
came with a custom firmware called
whited00r which integrates some of the
function of recent firmware without
affecting the performance of the device.
 No doubt, that the whited00r firmware are
very popular among old generation iDevice
users.

8.  Whited00r 5.1 cleverly integrates some of
the best features of iOS 4 and iOS 5.
 This custom firmware are based on iOS 3.1.1
firmware.
 This will ensure that your device can
smoothly run without much lag

9.  Also you can revert back to previous
firmware easily, since Apple have stopped
supporting the old firmware.
 This means that should you notice
hampered performance, then you can just
use iTunes to downgrade to stable
firmware.

10.  Moreover, there is a dedicated forum to help
you out in adverse situation.
 The forum is very active.
 They are also planning to create redd00r, a
custom firmware based on iOS 4 to give you
more advantage.

11.  Make sure to check out the resource section
to find out more about Whited00r and how
to install whited00r or iOS 5.1 on iPod touch
2G/1G and iPhone 3G/2G/1G.

12. Resources
 Download Whited00r 5.1
 Download more custom iOS firmware