diff --git a/ext/lwip-1.4.1_patched.7z b/ext/lwip-1.4.1_patched.7z
index 072251690..5c5f8c78a 100644
Binary files a/ext/lwip-1.4.1_patched.7z and b/ext/lwip-1.4.1_patched.7z differ
diff --git a/readme.txt b/readme.txt
index de81d7633..190c31678 100644
--- a/readme.txt
+++ b/readme.txt
@@ -74,6 +74,8 @@
 
 *** 16.1.4 ***
 - ALL: Startup files relicensed under Apache 2.0.
+- VAR: Fixed state check in lwIP when SYS_LIGHTWEIGHT_PROT is disabled
+       (bug #713).
 - RT:  Fixed race condition in RT registry (bug #712). 
 - HAL: Fixed IAR warnings in ext_lld_isr.c (bug #711).
 - HAL: Fixed build error caused by STM32 SPIv1 driver (bug #710).