I have TL-MR3420 v3 not detecting universal modem D-Link DWM 157 when on the compatibility list it CLEARLY does.
link to list: http://219.134.132.87/en/support/3g-...&location=1460.
The TL-MR3420 v2 Routers had the same problem with this Very particular Modem DWM-157 and I was sent a BATA firmware update by TP-Link tech support which was: mr3420v2_en_3_16_9_up(160420).bin
that worked just fine. I'm just hoping if I can get the support. I would greatly appreciate it.