Select 21.180.99.03.00 firmware file for decustomization. Use your account details to log in, otherwise you have a possibility to access software with free account that will allow you only to detect deviceĪfterwards, Huawei HiSilicon Firmware writer software window will appear with detected E5577 info If there is no DC-Unlocker/Rocker/Vygis or Infinity dongle connected to PC, then log in screen will appear. Launch Huawei HiSilicon firmware writer software Check adapter bindings like shown hereĭownload Huawei HiSilicon firmware writer
Insert unsupported operator sim card into device - if it's locked to operator 'A', then insert operator's 'B' sim card and connect modem to PC. NOTE: This guide is only for Huawei E5577-321 Zain with firmware 21.200.05.00.375
