I followed this example and works for me (Huawei MU709s):
Posts made by Denis Ber
RE: Omega and Cellular connectivity 3G
RE: Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: ... and a possible reason
I created a network with SSID 하이네켄인증포어러2.4G and got the same behavior.
I think that the last build solve this.
Now I'm running LEDE on my board.
RE: Can't connect to WiFi network with emoji char in it
Maybe is the same cause of this:
I think the last build solve this issue.