I have several MiFi’s, and several Spitz’. The MiFi’s will not DMZ or Port Forward, but the Spitz works perfectly. Same sim card (the account rides the card …)
static apn from carrier (iot.tmowholesale.static)
I can’t find any other differences. Both started from scratch 3.105 upgrade and factory reset.
I didn’t keep any of the older fw’s but I know I had it working in previous versions.
Again, same sim card DMZ and Port Forward works perfectly in Spitz 3.105.