EM7455 aggregation band on windows 10

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przenow2
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EM7455 aggregation band on windows 10

Post by przenow2 » Sat Aug 10, 2019 10:33 am

Hello, i have big problem (becouse my english is not well, maybe i not understand something), sorry for polish language in screenshoot in attachment.

I have EM7455 in my lenovo x260, and in device manager show me numbers but no COM3, if i try find my EM7455 in terminal it show error in russian language (i dont understand it).

Can u help me with aggregation band ? i want use only LTE 1800/2100

Sorry for the spelling mistakes, my english is really not good ;/
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JimHelms
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Re: EM7455 aggregation band on windows 10

Post by JimHelms » Sat Aug 10, 2019 6:42 pm

Have you downloaded the and installed the Sierra Wireless Software drivers for windows.

That allows the PC to communicate with the modem and COM ports.

przenow2
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Re: EM7455 aggregation band on windows 10

Post by przenow2 » Sun Aug 11, 2019 4:04 am

Yes "skylight" work great 3g/lte and gps

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JimHelms
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Re: EM7455 aggregation band on windows 10

Post by JimHelms » Sun Aug 11, 2019 6:40 am

The problem is that allowing Skylight and/or Windows to control the modem, can place the modem in an undesirable composition. We have seen this on numerous occasions.

I would first uninstall Skylight, and all the Sierra Wireless software and components, and reboot the PC.

With the SIM Card removed, I would reinstall the Sierra Wireless software drivers for Windows and then see if the Huawei terminal will then see the Modem WAN COM port.

przenow2
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Re: EM7455 aggregation band on windows 10

Post by przenow2 » Sun Aug 11, 2019 9:39 am

It not work ;/ i try install also hvsa13ww and nz1wn10w from lenovo webpage and it not work same..

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JimHelms
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Re: EM7455 aggregation band on windows 10

Post by JimHelms » Mon Aug 12, 2019 7:25 am

It sounds like, for whatever reason, you have lost your WAN Modem COM Port.

You may have to use a Linux machine to access the modem and restore it to OEM status.

przenow2
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Re: EM7455 aggregation band on windows 10

Post by przenow2 » Mon Aug 12, 2019 2:52 pm

Ohh ;/ Do you have tutorial how do it ? I have bootable usb with linux but i dont remember witch one :o

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JimHelms
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Re: EM7455 aggregation band on windows 10

Post by JimHelms » Mon Aug 12, 2019 6:36 pm

Unfortunately, there is not a tutorial, but the issue has been addressed several times on the forum. I would try using the search function.

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JimHelms
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Re: EM7455 aggregation band on windows 10

Post by JimHelms » Mon Aug 12, 2019 6:57 pm

You might refer to THIS document.

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