I have read about code unloking way.

It has to be pressed arrow left two times asterisk arrow left it appears personalized with MNC2 for 2 secends then in the menu Personalize is only one option ESL after selecting this on the main screen is wrote Unlock(ESL) 5 {in my case 4 cos I typed once by an accident incorrect code} below this is ECK: and empty place to type the code.

Does anybody know How to generate the unlocking code for free?
After flashing the phone again, it is possible to have 5 new chances to type the unlocking code?