# EM7455 Device stuck after RMARESET

**URL:** https://forum.sierrawireless.com/t/em7455-device-stuck-after-rmareset/29750
**Category:** MC/EM Series
**Tags:** driver
**Created:** [May 12, 2023, 6:26pm UTC](https://forum.sierrawireless.com/t/em7455-device-stuck-after-rmareset/29750 "2023-05-12T18:26:13Z")
**Posts on this page:** 4
**Page:** 1

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### Author: ![akn](https://avatars.discourse-cdn.com/v4/letter/a/f17d59/32.png) [@akn](https://forum.sierrawireless.com/u/akn)
#### Post date: [May 12, 2023, 6:26pm UTC](https://forum.sierrawireless.com/t/em7455-device-stuck-after-rmareset/29750/1 "2023-05-12T18:26:13Z")

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EM7455 Device stuck after RMARESET.

dmesg Logs:

GobiSerial 4-1:1.0: GobiSerial converter detected  
usb 4-1: GobiSerial converter now attached to ttyUSB0  
GobiSerial 4-1:1.2: GobiSerial converter detected  
usb 4-1: GobiSerial converter now attached to ttyUSB1  
GobiSerial 4-1:1.3: GobiSerial converter detected  
usb 4-1: GobiSerial converter now attached to ttyUSB2  
GobiNet 4-1:1.8: cell0: register ‘GobiNet’ at usb-0002:04:00.0-1, GobiNet Ethernet Device, 06:6e:55:09:70:08  
USB Speed : USB 3.0  
GobiNet 4-1:1.10: cell1: register ‘GobiNet’ at usb-0002:04:00.0-1, GobiNet Ethernet Device, 06:6e:55:09:70:0a  
USB Speed : USB 3.0

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<div class="post-metadata">

### Author: ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)
#### Post date: [May 12, 2023, 11:50pm UTC](https://forum.sierrawireless.com/t/em7455-device-stuck-after-rmareset/29750/2 "2023-05-12T23:50:03Z")

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Aren’t the usb ports enumerated?

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<div class="post-metadata">

### Author: ![akn](https://avatars.discourse-cdn.com/v4/letter/a/f17d59/32.png) [@akn](https://forum.sierrawireless.com/u/akn)
#### Post date: [May 13, 2023, 12:13am UTC](https://forum.sierrawireless.com/t/em7455-device-stuck-after-rmareset/29750/3 "2023-05-13T00:13:04Z")

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Yes, ttyUSB0. ttyUSB1, ttyUSB2 gets generated but it enumerates extra ethernet interface for cell.

Why does it create two cellular interfaces?

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<div class="post-metadata">

### Author: ![jyijyi](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/jyijyi/32/4766_2.png) [@jyijyi](https://forum.sierrawireless.com/u/jyijyi)
#### Post date: [May 13, 2023, 12:14am UTC](https://forum.sierrawireless.com/t/em7455-device-stuck-after-rmareset/29750/4 "2023-05-13T00:14:40Z")

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have you checked the followings?

```auto
AT!ENTERCND="A710"
aT!USBCOMP?
AT!USBCOMP=?

```