Problem with 3310 flashing

i flashed the 3310 with mod-soft 5.47version. After flashing, phone siad that SIM-card cannot be identified. I FAID it and then i reached to menu. But phone was unable to identify the network. Few minutes phone restart itself. Whats the problem? Anyway i am from Estonia.

You have to fix all checksums.

I use for that DTC3FlashConverter go to the third label and then select your flash, analize and fix all checksums.
After that re-flash it to your phone.
Good Luck