no network plz help

[foxthemene]

anycool d66 has no network
i tried every thing from flshing eeprom to fullflash but nothing worked
this is the firmware version:
E553_K4SMCHARAB_E553_GPRS_MT6226_S01.01_1
what should i do?

[InfinityHelp]

hello!

lets start from begginig. what was phone initial state and after which operation it lost network?