# Cannot do firmware upgrade

**URL:** <https://forum.ubiquityrobotics.com/t/cannot-do-firmware-upgrade/1020>\
**Category:** Uncategorized\
**Created:** [October 25, 2022, 1:49am UTC](https://forum.ubiquityrobotics.com/t/cannot-do-firmware-upgrade/1020 "2022-10-25T01:49:30Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![dysqrencia](https://forum.ubiquityrobotics.com/letter_avatar_proxy/v4/letter/d/cc9497/32.png) [@dysqrencia](https://forum.ubiquityrobotics.com/u/dysqrencia)\
**Post date:** [October 25, 2022, 1:49am UTC](https://forum.ubiquityrobotics.com/t/cannot-do-firmware-upgrade/1020/1 "2022-10-25T01:49:30Z")

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Hello. My ubiquity robot cannot communicate with the motor. So I disable the motor control to do firmware upgrade but error appears.

Can anyone please help me ? Thank you.

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**Author:** ![MoffKalast](https://forum.ubiquityrobotics.com/user_avatar/forum.ubiquityrobotics.com/moffkalast/32/214_2.png) [@MoffKalast](https://forum.ubiquityrobotics.com/u/MoffKalast)\
**Post date:** [October 25, 2022, 11:45am UTC](https://forum.ubiquityrobotics.com/t/cannot-do-firmware-upgrade/1020/2 "2022-10-25T11:45:48Z")

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Hmm right, I think the automatic upgrade is broken right now, you’ll have to do something like:

```auto
roscd ubiquity_motor
python2 scripts/upgrade_firmware.py --file firmware/v43_20210829_enc.cyacd

```

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<div class="post-metadata">

**Author:** ![dysqrencia](https://forum.ubiquityrobotics.com/letter_avatar_proxy/v4/letter/d/cc9497/32.png) [@dysqrencia](https://forum.ubiquityrobotics.com/u/dysqrencia)\
**Post date:** [October 26, 2022, 4:22am UTC](https://forum.ubiquityrobotics.com/t/cannot-do-firmware-upgrade/1020/3 "2022-10-26T04:22:45Z")

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Already try your suggestion but still cant, the same error appears.

This is the error : “Exception: Packet did not start with valid start byte, instead: ← [] – header: ← []”

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<div class="post-metadata">

**Author:** ![MoffKalast](https://forum.ubiquityrobotics.com/user_avatar/forum.ubiquityrobotics.com/moffkalast/32/214_2.png) [@MoffKalast](https://forum.ubiquityrobotics.com/u/MoffKalast)\
**Post date:** [October 26, 2022, 8:57am UTC](https://forum.ubiquityrobotics.com/t/cannot-do-firmware-upgrade/1020/4 "2022-10-26T08:57:18Z")

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Ah that does sound more like a hardware issue, @mjstn2011 ever seen anything similar?

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<div class="post-metadata">

**Author:** ![dysqrencia](https://forum.ubiquityrobotics.com/letter_avatar_proxy/v4/letter/d/cc9497/32.png) [@dysqrencia](https://forum.ubiquityrobotics.com/u/dysqrencia)\
**Post date:** [November 1, 2022, 4:44am UTC](https://forum.ubiquityrobotics.com/t/cannot-do-firmware-upgrade/1020/6 "2022-11-01T04:44:44Z")

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hi, is it because of the motor control board problem ?

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**Author:** ![mjstn2011](https://forum.ubiquityrobotics.com/user_avatar/forum.ubiquityrobotics.com/mjstn2011/32/30_2.png) [@mjstn2011](https://forum.ubiquityrobotics.com/u/mjstn2011)\
**Post date:** [November 27, 2022, 9:53pm UTC](https://forum.ubiquityrobotics.com/t/cannot-do-firmware-upgrade/1020/7 "2022-11-27T21:53:08Z")

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Send email to [support@ubiquityrobotics.com](mailto:support@ubiquityrobotics.com) and in the subject line say Cannot load firmware ATTENTION Mark  
This sounds like serial communications problem. Best to deal with in email so I can send things. Thanks, Mark

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**Author:** ![mjstn2011](https://forum.ubiquityrobotics.com/user_avatar/forum.ubiquityrobotics.com/mjstn2011/32/30_2.png) [@mjstn2011](https://forum.ubiquityrobotics.com/u/mjstn2011)\
**Post date:** [November 27, 2022, 9:56pm UTC](https://forum.ubiquityrobotics.com/t/cannot-do-firmware-upgrade/1020/8 "2022-11-27T21:56:56Z")

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In the email please say the MCB board revision, on left front edge in white.

Take a look at this link below Part 1.1 and Part 2.1 and report in the email what you see on your Magni. Also include serial number on MCB big board on the white tag OR just a picture of that white tag that is readable.  
[https://learn.ubiquityrobotics.com/noetic\_magni\_silver\_verification](https://learn.ubiquityrobotics.com/noetic_magni_silver_verification)

Thanks