diff --git a/0.9.2/512k-flash/nodemcu_512k.bin b/0.9.2/512k-flash/nodemcu_512k.bin
index 902806a7..41c2f03c 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 0da4c826..2f4e1fc6 100644
--- a/README.md
+++ b/README.md
@@ -1,16 +1,13 @@
 # **NodeMcu** #
 ###A lua based firmware for wifi-soc esp8266
-version 0.9.2 build 2014-12-08
+version 0.9.2 build 2014-12-09
 # Change log
+2014-12-09<br />
+increase alarmer num in tmr module to 7.
+
 2014-12-08<br />
 add uart.setup(), uart.write() api.<br />
 
-2014-12-07<br />
-add ow(1-wire module), from arduino, and use same api.<br />
-add an 18b20 1-wire example.<br />
-change net.socket.send() payload max len from 256 to 1460.<br />
-modify gpio.mode() api, add internal pullup/float para.
-
 [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