Can I downgrade my iPhone 4 from iOS7 to iOS6?

I accidentally upgraded my iPhone 4 to iOS7 and am very dissapointed with it. I had not previously jailbroken it, but I don't mind jailbreaking if that is the only alternative. Somebody please suggest if downgrading to iOS6 is still possible or not. And if yes, how?

Try the JustPenguin site where you'll find links to various versions of the iOS. Those that have a green check next to them are still signed by Apple. Click on the appropriate link to download the version suitable for your device. In the case of an iPhone, be sure to choose the right carrier version - GSM or CDMA.

Pic link: images.techhive.com/images/article/2013/…

While you're waiting for the software to download, turn to your device, tap SETTINGS > iCloud > Find my (nameofdevice) and switch off this option. An iOS 7 security scheme won't allow you to restore the device without disabling the Find My feature. You can't do that without entering your Apple ID's password (not the pass code you've assigned to the device).

Once you've downloaded the older version of the iOS, connect your device to iTunes, select it, and choose the Summary tab. Hand down the Option key and click on Restore (nameofdevice). A navigation window will appear. Locate the iOS file you just downloaded and click Update, your device will go dark and the downgrade will begin. When the installation is completed, you'll be walked through the usual iDevice setup process.

Not possible.