How To: Install Apps on Your iPhone Easily, No Hacking Skills Required

Check your firmware version:

1 open settings
2 open general setion
3 goto about device
4 check Version!

If you have iPod Touch verison = 1.1.4 follow steps and instructions.

Install instructions for iPhone and iPod Touch applications from official Apple save 20$. Mail, Maps, Stocks, Notes, Weater applications.

Safari for iPod Touch now able to download files from internet.

If you firmware version is 1.1.3 you can do downgrade. If Downgrade fails than read following:
Download firmware from here.

video instruction





If you have iPod Touch firmware version 1.1.2 (released 09.11.07), it is possible to downgrade to version 1.1.1 most stable and popular hackers version.

Steps:

1 Download firmware 1.1.1 and 1.1.2 versions first is Hit star. About 160 Mb.

2 Start iTunes
3 Select player from list.
4 you'll see restore and upgrade on the right in iTunes.
5 hold Shift and click Restore.
6 than select downloaded firmware (iPod1,1_1.1.1_3A110a_Restore.ipsw) and press Ok.

Note to upgrade to 1.1.2 follow same steps, but select different firmware (iPod1,1_1.1.2_3B48b_Restore.ipsw).

If you have error message "Can't upgrade iPod. Not enough virtual memory." Do following:

1 Open: Control Panel
2 System
3 tab "Advanced"
4 environment variables
5 change tmp and temp variables to c:\temp

Enable Wifi

Open Safary browser and navigate to http://jailbreakme.com then press Install AppSnapp

And

Your are done!!!
Congratulations!!!

Read how to install iPhone applications (Mail, Stock, Notes, Weather)...

Full steps video.