From there, I can run any firmware update, the update circle starts to spin, but I cannot pass the "begin to resume the user information" step.Īlthough I can see the COM ports in Device manager, the DC Unlocker cannot recognize the modem, so I am unable to send any AT commands. When the device is conneced to the PC, the Updating circle appears in the static position. When the battery is removed and returned back, the "Ready to update" message is displayed. It shows the Huawei logo, and then the screen goes black. Unfortunately, as of the first unsuccessful firmware update, the device won't power on anymore. The problem: although the device had the unlocked status, inserting the Sim card didn't work: I was only able to see the No service message.Ĭonsidering that the device was unlocked, I have tried with the firmware upgrade, but I have never been able to pass the "begin to resume the user information" step. The DC Unlocker showed that it was unlocked (0 wrong codes entered, 10 unlock attempts left). It's 5577s-321 originating from Swedish Tele-2. I have purchased this device in non-working condition to see if I can bring it back to life. Huawei 5577s-321 stuck in firmware upgrade
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