Practical Reverse Engineering by Juan Carlos Jiménez (http://jcjc-dev.com/)
http://jcjc-dev.com/2016/04/08/reversing-huawei-router-1-find-uart/
http://jcjc-dev.com/2016/04/29/reversing-huawei-router-2-scouting-firmware/
http://jcjc-dev.com/2016/05/23/reversing-huawei-3-sniffing/
http://jcjc-dev.com/2016/06/08/reversing-huawei-4-dumping-flash/
http://jcjc-dev.com/2016/12/14/reversing-huawei-5-reversing-firmware/