# BC118 firmware update

**URL:** <https://forum.sierrawireless.com/t/bc118-firmware-update/12336>\
**Category:** WiFi and Bluetooth Modules\
**Created:** [April 5, 2018, 9:07pm UTC](https://forum.sierrawireless.com/t/bc118-firmware-update/12336 "2018-04-05T21:07:30Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![mlw](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.sierrawireless.com/mlw/32/3706_2.png) [@mlw](https://forum.sierrawireless.com/u/mlw)\
**Post date:** [April 12, 2018, 8:03am UTC](https://forum.sierrawireless.com/t/bc118-firmware-update/12336/2 "2018-04-12T08:03:33Z")

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Hi,

You should be able to flash the unit using the Blueflash tool which comes with the Bluesuite tool from the CSR web site which I discuss in the below link (the Bluesuite tool set not Blueflash).

> [@BC127 downgrade firmware](https://forum.sierrawireless.com/t/bc127-downgrade-firmware/12322/4):
>
> Hi, The protocol has not really been changed by Sierra/BC but the loader tool has obviously been upgraded/changed in the past to cater for various changes external to the protocol. I have written how to up/downgrade the BC127 a few times on the forum but you can use the DFU wizard which is a available through the CSR support site at the below link, you obviously need to create yourself a login first. [https://www.csrsupport.com/PCSW#s20548](https://www.csrsupport.com/PCSW#s20548) So the procedure to downgrade once you have tool is a…

To use Blueflash you would need to use the SPI interface on the modules which is good because it is far faster than any other method. You do need to buy the CSR SPI chip from Digikey as the SPI interface is proprietary.

> **[Electronic Components | Digi-Key Electronics](https://www.digikey.com/en/products/filter/development-boards-kits-programmers/799?s=N4IgTCBcDaIMYGcBOACBAHAlgfgNYF5FUNMQBdAXyA)**
>
> Digi-Key is your authorized distributor with over a million in stock products from the world’s top suppliers. Rated #1 in content and design support!

For the firmware files themselves you are going to need to get them through one of our more specialist distributors as we do not have any on the source (not good I know). If you contact one and the project can be registered with the relevant apps engineer who supports the distributor you have chosen sending you the files for the firmware you want.

Regards

Matt

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