State Bank of India — Problem with mobile banking

my sbi mobile banking user id aij403. Once I formatted my mobile phone. so all my external softwares are deleted. again i downloaded sbi mobile banking application. when i entered my user id, it prompted me to enter old MPIN and to enter new MPIN. I know my current MPIN. But from last few days, SBI MOBILE BANKING ask all details like Userid, MPIN, password and then going inside of application also. But while using some service, (when it is connect to GPRS) it is suddenly coming as "CODE ERROR" and appication closed without complete my request.

Now I am able to use SBI Mobile banking service. So please clarify my problem

Thanks & regards,
Satish mishra
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