diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
@@ -6,6 +6,7 @@ The initialization sequence is virtually the same on all these combo chips, so a
 
 We currently provide firmware/support for the following chips:
 * CYW43455 (BCM4345C0.hcd) - extensively tested on a Raspberry Pi 4
+* CYW43438 (BCM43430A1.hcd) - untested
 
 **Note:** since this driver uses the H4 protocol for communication, the UART link must support hardware flow control to prevent packet loss.
 
diff --git a/src/vendor/cywbtserialbus.inx b/src/vendor/cywbtserialbus.inx
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diff --git a/src/vendor/fw/BCM43430A1.hcd b/src/vendor/fw/BCM43430A1.hcd
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index 0000000..2a7ec96
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