diff --git a/tools/fw_zbbridge/readme.txt b/tools/fw_zbbridge/readme.txt
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+++ b/tools/fw_zbbridge/readme.txt
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+The ncp-uart-sw_6.7.6_115200.ota is for EZSP v8 compatible hosts
+The ncp-uart-sw_6.5.5_115200.ota its for older like current ZHA