# MC7455 firmware update fails - error 6

**URL:** <https://forum.sierrawireless.com/t/mc7455-firmware-update-fails-error-6/26075>\
**Category:** MC/EM Series\
**Tags:** fw-upgrade\
**Created:** [January 26, 2022, 4:53pm UTC](https://forum.sierrawireless.com/t/mc7455-firmware-update-fails-error-6/26075 "2022-01-26T16:53:47Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![tylerterpstra](https://avatars.discourse-cdn.com/v4/letter/t/e0b2c6/32.png) [@tylerterpstra](https://forum.sierrawireless.com/u/tylerterpstra)\
**Post date:** [January 26, 2022, 4:53pm UTC](https://forum.sierrawireless.com/t/mc7455-firmware-update-fails-error-6/26075/1 "2022-01-26T16:53:47Z")

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I’m trying to update firmware on some MC7455 - 1103789 modems.  
Modems came with 2.24 firmware.  
I can update them successfully on a linux device to SWI9X30C\_02.32.11.00 (AT&T specific) firmware without issue.

```auto
SWI9X30C_02.32.11.00_ATT_002.070_005.nvu 100% 13KB 4.1MB/s 00:00    
SWI9X30C_02.32.11.00.cwe 100% 61MB 3.6MB/s 00:17    
root@xxxy:~# cd /tmp/
root@xxxy:~# chmod 777 fwdldarm
root@xxxy:~# ./fwdldarm -s /opt/bin/slqssdk -d 9x15 -p /opt/generic

INFO: Running with device in application mode
INFO: Path: /opt/generic
INFO: Device Type( 0,1,2->9x00,9x15/9x30,G3K ): 1
Downloading Firmware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Firmware Download Completed
Device Ready

```

I tried to update them to generic firmware SWI9X30C\_02.33.03.00 on the same device and the same procedure but get an error:

```auto
INFO: Running with device in application mode
INFO: Path: /opt/generic
INFO: Device Type( 0,1,2->9x00,9x15/9x30,G3K ): 1
Downloading Firmware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ERROR: Failed to get firmware details after download
Failure Code: 6

```

I can’t find any info on the Sierra site about this error? Any suggestions on other methods I could try or info I could gather?

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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:** [January 27, 2022, 1:13am UTC](https://forum.sierrawireless.com/t/mc7455-firmware-update-fails-error-6/26075/2 "2022-01-27T01:13:11Z")

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I don’t think you should use “-d 9x15” for mc7455

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<div class="post-metadata">

**Author:** ![tylerterpstra](https://avatars.discourse-cdn.com/v4/letter/t/e0b2c6/32.png) [@tylerterpstra](https://forum.sierrawireless.com/u/tylerterpstra)\
**Post date:** [January 27, 2022, 7:59pm UTC](https://forum.sierrawireless.com/t/mc7455-firmware-update-fails-error-6/26075/3 "2022-01-27T19:59:19Z")

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@jyijyi are you suggesting this could be the problem and I should exclude that part and use this?

`./fwdldarm -s /opt/bin/slqssdk -p /opt/generic`

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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:** [January 28, 2022, 12:42am UTC](https://forum.sierrawireless.com/t/mc7455-firmware-update-fails-error-6/26075/4 "2022-01-28T00:42:49Z")

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I think mc7455 is using 9x30 chipset

BTW, is the FW update successful? (but just Failed to get firmware details after download)

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<div class="post-metadata">

**Author:** ![tylerterpstra](https://avatars.discourse-cdn.com/v4/letter/t/e0b2c6/32.png) [@tylerterpstra](https://forum.sierrawireless.com/u/tylerterpstra)\
**Post date:** [January 31, 2022, 1:53pm UTC](https://forum.sierrawireless.com/t/mc7455-firmware-update-fails-error-6/26075/5 "2022-01-31T13:53:21Z")

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The firmware update fails, checking the status after the error and it is still running the factory loaded 2.24 firmware.  
I tried with the previous generic firmware as well - SWI9X30C\_02.32.11.00\_Generic\_002.064\_000, and the failure is the same.  
So generic fails and AT&T specific works at 2.32 level firmware.

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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:** [January 31, 2022, 1:56pm UTC](https://forum.sierrawireless.com/t/mc7455-firmware-update-fails-error-6/26075/6 "2022-01-31T13:56:10Z")

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how about using Windows EXE file

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<div class="post-metadata">

**Author:** ![tylerterpstra](https://avatars.discourse-cdn.com/v4/letter/t/e0b2c6/32.png) [@tylerterpstra](https://forum.sierrawireless.com/u/tylerterpstra)\
**Post date:** [January 31, 2022, 6:57pm UTC](https://forum.sierrawireless.com/t/mc7455-firmware-update-fails-error-6/26075/7 "2022-01-31T18:57:36Z")

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I’ll try to get an enclosure to connect to a windows pc and try.