Firmware : LEDE 17.01.4
After enter "reboot" command,the router will not reboot and it just crash until the power is reset in person.
Newifi D1 has 32M flash and the problem is similar to these link:
https://forum.openwrt.org/viewtopic.php?id=46034
http://blog.csdn.net/manfeel/article/details/43530817
I hope that someone can fix this problem for which all this model's devices are in 32M flash and cannot softly reboot. And other kind of firmware has fix this issue.
Thank you!