diff --git a/components/bt/bluedroid/stack/include/stack/hcimsgs.h b/components/bt/bluedroid/stack/include/stack/hcimsgs.h
index c2067a2f8a..37b64c7d15 100644
--- a/components/bt/bluedroid/stack/include/stack/hcimsgs.h
+++ b/components/bt/bluedroid/stack/include/stack/hcimsgs.h
@@ -275,7 +275,10 @@ BOOLEAN btsnd_hcic_hold_mode(UINT16 handle, UINT16 max_hold_period,
 #define HCI_HOLD_MODE_MIN_PER_OFF       4
 /* Hold Mode */
 
-/* Sniff Mode */
+/**
+ * Sniff Mode
+ * sniff_attempt should no more than 0xFF
+ */
 BOOLEAN btsnd_hcic_sniff_mode(UINT16 handle,
                               UINT16 max_sniff_period,
                               UINT16 min_sniff_period,
diff --git a/components/bt/lib b/components/bt/lib
index d65d35f4e0..62cabd5b6f 160000
--- a/components/bt/lib
+++ b/components/bt/lib
@@ -1 +1 @@
-Subproject commit d65d35f4e0102f0f3640267f94c0ac6ce2a5fa91
+Subproject commit 62cabd5b6f55d5a53eb4c13f628f4fd8139f535e
diff --git a/components/esp32/ld/esp32.rom.ld b/components/esp32/ld/esp32.rom.ld
index 22f861daad..aaf5a4a074 100644
--- a/components/esp32/ld/esp32.rom.ld
+++ b/components/esp32/ld/esp32.rom.ld
@@ -673,6 +673,7 @@ PROVIDE ( ld_acl_rx_no_sync = 0x4002fe78 );
 PROVIDE ( ld_sco_modify = 0x40031778 );
 PROVIDE ( lm_cmd_cmp_send = 0x40051838 );
 PROVIDE ( ld_sco_frm_cbk = 0x400349dc );
+PROVIDE ( ld_acl_sniff_frm_cbk = 0x4003482c );
 PROVIDE ( r_ld_acl_active_hop_types_get = 0x40036e10 );
 PROVIDE ( r_ld_acl_afh_confirm = 0x40036d40 );
 PROVIDE ( r_ld_acl_afh_prepare = 0x40036c84 );