iPhone booting problem

[Dare Devil]

I have a I Phone 2G(Ver 2.0).Today i download BiteSMS app using Cydia(this is the first time i using the appn cydia).After the download completed i press the "Reload SpringBoard" button.It will take a longtime,so i lose my patience and power off the phone.Now i switch on the phone, the apple logo appears for the last 20 minutes.The phone not booting.
(I am using Airtel GPRS.My friend from USA given this Phone on last november and told me that don't do anything with the Cydia and Installer Apps.)
Pl give ur suggestion to solve my problem.

 

[Dare Devil]

Pl give ur suggestions to boot my phone.

 

[superczar]

Err, if nothing else works, do a simple restore to 2.2 via iTunes, then re-jailbreak/unlock

 

[Dare Devil]

Connected to the PC.But my phone name not shown in the I tunes.

 

[superczar]

put it in recovery mode

Switch off phone...then keep home button pressed while plugging it into the PC

 

[Dare Devil]

Thanks Dude.

Problem solved.

Updated to 2.2.1,then unlocked&jailbroken.