Kindly pls help
 

I am new in jailbreaking pls someone help currently i am using iphone 3gs 3.1.2 (05.11.07) jailbreak n unlock with blackra1n.... some day before i install a file fake firmware from cydia now my firmware shows 3.1.3 (05.11.07) and cydia shows this device has shshs on file for iphone OS: 3.1.2, 3.1.3 (i never backup on cydia).. kindly guide me what i do next for my safety or if i want to rejailbreaking my iphone.... thanks

i have not any shsh file but cydia show this decive has shshs on file for iphone OS: 3.1.2, 3.1.3... what i do pls guide i want to restore my iphone.