MR600v1 LTE band selection

  @kernash  This is possible in an older beta firmware, see here -> https://community.tp-link.com/en/home/forum/topic/241534

I just don't understand why it wasn't included in the later official version.

  @Ingo_B. 

Thank you. Yes, I know, but that version doesn't get security updates. It is discouraged to use such an old version with known and published security issues.