1. Convert original Wintesla flash files to one file with extension FLS
2. Take Knok , choose write flash select Ok and wait for end flash. If after this phone not powering on , you propablly have damaged eeprom (maybe you overwrite it with flash) . Just write new eeprom from other 3310 or virgin eeprom and update IMEI, FAID etc.
It's very very easy
