diff --git a/components/bootloader/subproject/main/component.mk b/components/bootloader/subproject/main/component.mk
index fd4cc90c..76688a32 100644
--- a/components/bootloader/subproject/main/component.mk
+++ b/components/bootloader/subproject/main/component.mk
@@ -10,6 +10,6 @@ LINKER_SCRIPTS := \
 	$(IDF_PATH)/components/esp8266/ld/esp8266.rom.ld \
 	esp8266.bootloader.rom.ld
 
-COMPONENT_ADD_LDFLAGS += -L $(COMPONENT_PATH) $(addprefix -T ,$(LINKER_SCRIPTS))
+COMPONENT_ADD_LDFLAGS += -L $(IDF_PATH)/components/esp8266/lib -lcore -L $(COMPONENT_PATH) $(addprefix -T ,$(LINKER_SCRIPTS))
 
 COMPONENT_ADD_LINKER_DEPS := $(LINKER_SCRIPTS)
diff --git a/components/bootloader_support/src/bootloader_init.c b/components/bootloader_support/src/bootloader_init.c
index 9a48a4b8..adaa0af0 100644
--- a/components/bootloader_support/src/bootloader_init.c
+++ b/components/bootloader_support/src/bootloader_init.c
@@ -629,6 +629,9 @@ static esp_err_t bootloader_main()
     fhdr.spi_mode = CONFIG_SPI_FLASH_MODE;
 #endif
 
+    extern void phy_reg_default(void);
+    phy_reg_default();
+
     update_flash_config(&fhdr);
 
     print_flash_info(&fhdr);
diff --git a/components/esp8266/lib/VERSION b/components/esp8266/lib/VERSION
index 3dc6a093..952d521f 100644
--- a/components/esp8266/lib/VERSION
+++ b/components/esp8266/lib/VERSION
@@ -1,5 +1,5 @@
 gwen:
-    core:       1d123ab
+    core:       176661b
     net80211:   0f9461d
     pp:         8ec2d94
     wpa:        4e2372f
diff --git a/components/esp8266/lib/libcore.a b/components/esp8266/lib/libcore.a
index e7aba3c9..d97af6c6 100644
Binary files a/components/esp8266/lib/libcore.a and b/components/esp8266/lib/libcore.a differ