Manipulating the SXT-LTE6 in order to mount it on a mast, I probably must have stuck the R11e-LTE6 modem board due to ESD discharging.
The Routerboard works correctly I must have simply fried the modem.
Luckily enough I can get a R11e-LTE (not LTE6) in a couple of days.
Now the question:
Can I mount the R11e-LTE on a SXT-LTE6 hardware?