hi everyone. wanna ask something. why did my broadband got slow down when i plugged it into mr3420 v2. but the speed got really fast if i plug it to my computer. it boggles my mind. have been using 2 different sim card and it is still the same. it's like the router capped my speed really bad. btw i'm using original firmware with d-link dwm-156. when i tried to use openwrt. it doesn't detect my broadband modem.

Are you on 3G or LTE ?

Btw what modem are you using ?

My case , if on E398 / MR820D+ my 3G or LTE is faster than direct USB plug in, meaning ROOter FW is FTW 

Are you on the latest Huntsman ?

I am using Huntsman on V1 now, up since 12 noon

No issue so far, MF820D+ , if E398 , faster speed but today's turn is MF820D+ , I rotate my modems every 3 days.
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if u refer to huntsmand/blackwidow, it is all auto recognize and auto dialing,. whatever u save under the wan for E398 will auto reset after rebooting,. 

What steps you took that to brick-en it ?

I guess its only soft bricked and can be rescue via some shortening of the mobo

Give it to me.

I can RMA for you actually

Do it at your own risk !!

Try keywords like "lock", "cell", "lock cell", "mdma" in the bottom left search box. 

http://ofmodemsandmen.com/locking.html