@Richard_K As per all the info you have provided now, it seems it cannot be downgraded to the previous official version due to some unknown issue, which may occur during the firmware upgrade. Back to...

@RodStrave I suppose you are playing Minecraft on the computer? If yes, what if you connect the computer directly to the modem, can you play?

@ralphm24 That's great to know. I suppose the older driver version may have some unknown issues, but we are not sure.

@Brada83 Can you please show me the detailed system version of the Windows 10 64 bit, you may check it as per the guide here: https://www.tp-link.com/support/faq/2722/ Was there any error message...

@keilwarm79 It's good to know the beta firmware works. We will try to push the dev team to release an official version for it.

@kLumpat Just wandering, if you put this SIM card into a phone, or into another LTE router, will it work at band 20+3 stably? Are there other band selection available in the a1 telekom network?