Derived from version 0.9.5
This is a forked version of nodemcu-firmware: https://github.com/nodemcu/nodemcu-firmware
The changes from the original version are relatives to how MQTT "publish" is managed.
I removed the queue mechanism on publish: now message are directly sent and not ordered.
This question on stackoverflow it explains why I made this changes: http://stackoverflow.com/questions/33414441/nodemcu-and-esp8266-slow-mqtt-publish
Inside bin directory you will find 2 already prepared binary file to flash on the esp8266: 0x00000.bin and 0x10000.bin
Check my blog for other details: http://pestohacks.blogspot.com and description of a sample project