The LM506-0518 features at its core a Broadcom BCM20702 Bluetooth 4.0 HCI USB IC.
The BCM20702 is shipped from the factory with a generic firmware that will allow for communication between the IC and the host via HCI commands, however, this firmware does not include design-specific RF optimisations, the latest bug fixes or additional functionality. It's therefore important for the sake of RF testing and production that the host load on to the module a 'PatchRAM' firmware file.
- It's important to note that this patch is applied in volatile RAM memory and as such, must be re-applied each time the device is power-cycled. Needless to say the below routine should be integrated into the host solution that is to be deployed on the end-product.
This guide assumes that the user knows how and has the capability to issue a HCI command and to read a HCI event on their platform.
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