Hi all masters and friends , i want to jailbreak my iphone 4 , Version 4.3 ( 8F190 ) . plz. help me to do that for my i phone . i've read that i need to backup my iphone first before jailbreaking .so where can i get that backup software like tinyumbrella . and how to use it ? and then which program do i need to jailbreak my iphone and plz. paste me that jailbreaking software . Hope u all will help me . Regards. Ljm.