Please find SDK Version 3.1.1 here:
Broadcom WICED Software Development Kit 3.1.1
Please find SDK Version 3.1.1 w/HomeKit Version is here:
Broadcom WICED Software Development Kit 3.1.1 with HomeKit
If you had access to previous HomeKit versions, you should not have any issue.
If you need access please send a message to GregG_16 with your MFi Account number which can be found in the upper left hand corner of the Apple MFi portal at mfi.apple.com.
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