diff --git a/0.9.2/512k-flash/nodemcu_512k.bin b/0.9.2/512k-flash/nodemcu_512k.bin
index b435e245..f0957c26 100644
Binary files a/0.9.2/512k-flash/nodemcu_512k.bin and b/0.9.2/512k-flash/nodemcu_512k.bin differ
diff --git a/README.md b/README.md
index 9c68a4bf..75853702 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,12 @@
 # **NodeMcu** #
 ###A lua based firmware for wifi-soc esp8266
-version 0.9.2 build 2014-11-25
+version 0.9.2 build 2014-11-29
 # Change log
-[change log](https://github.com/nodemcu/nodemcu-firmware/wiki/nodemcu_api_en#change_log)<br />
-[变更日志](https://github.com/nodemcu/nodemcu-firmware/wiki/nodemcu_api_cn#change_log)
+2014-11-29<br />
+fix tmr.delay not work when delayed time < 1s.<br />
+fix pwm module not work when freq<77.<br />
+[more change log](https://github.com/nodemcu/nodemcu-firmware/wiki/nodemcu_api_en#change_log)<br />
+[更多变更日志](https://github.com/nodemcu/nodemcu-firmware/wiki/nodemcu_api_cn#change_log)
 # Summary
 - Easy to access wireless router
 - Based on Lua 5.1.4