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[k32w1] fix nbu flashing instructions #127

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[k32w1] fix nbu flashing instructions #127

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10 changes: 4 additions & 6 deletions examples/lighting-app/nxp/k32w/k32w1/README.md
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Expand Up @@ -167,13 +167,11 @@ The image needed on the host side is the one generated in `out/debug/` while the

### Flashing the NBU image

NBU image should be written only when a new NXP-SDK is released. [blhost tool](https://cache.nxp.com/secured/assets/downloads/en/device-drivers/blhost_2.6.7.zip?fileExt=.zip) can be used for flashing. Before writing the image, please make sure that K32W1 is in bootloader mode by keeping the SW4 button pressed while connecting the K32W1 board to an USB port (unplug the board if already connected to an USB port):
NBU image should be written only when a new NXP-SDK is released.

```bash
C:\nxp\blhost_2.6.7> blhost.exe -p COM50 -- receive-sb-file .\k32w1_nbu_ble_15_4_dyn_a1.sb3
```

Please note that COM50 should be replaced with the COM port that corresponds to the K32W1 device.
[K32W148 board quick start guide](https://www.nxp.com/document/guide/getting-started-with-the-k32w148-development-platform:GS-K32W148EVK) can be used for updating the NBU/radio core:
- Section 2.4 – Get Software – install SPSDK (Secure Provisioning Command Line Tool)
- Section 3.3 – Updating NBU for Wireless examples - use the corresponding .sb3 file found in the SDK package at path `middleware\wireless\ieee-802.15.4\bin\k32w1\`

<a name="flashing-the-host-image"></a>

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